The Pro-Nicene Grammar of One God:

Monarchy and Essence from Origen to Newman

THESIS

This essay argues that the pro-Nicene tradition resolves the specific tensions in Origen’s monarchy-first account by relocating “one God” to the one divine essence while retaining the Father’s primacy as personal cause, and that Gregory of Nazianzus and John of Damascus supply the controlling grammar for this resolution. Read through an act-relational ontology, this means that the “one God” named in Scripture and dogma is the one simple act-of-relation-as-gift, while the monarchy names how this act has its unoriginate provenance in the Father. Origen’s intention, in my mind, is clear (albeit I’m sure there’s nuance missing as I’m not a specialist but here’s how I see it at the moment): unity is safeguarded by the monarchy of the Father; distinction is safeguarded by eternal generation and ordered procession. Yet, his idiom of participation and order leaves pressures toward subordination that later theology neutralizes by clarifying that unity is the single nature shared by the three, that “cause” is a personal relation of origin rather than an efficient cause, and that the three act inseparably. Gregory of Nazianzus gives the grammar that Origen reaches for, and John of Damascus consolidates it in a systematic key, while intentionally leaving the “how” of generation and procession beyond analysis for principled reasons. In contemporary terms, they are implicitly securing the identity of monarchy, essence, and operation inside one and the same act-relational primitive rather than letting “monarchy” float as a separate prerogative of the Father over against the shared essence.

ORIGEN’S OFFER

Origen’s way through the biblical confession of the one God who is Father, Son, and Holy Spirit can be stated simply. First, one God by monarchy: “one God” is first the Father as sole fons and aitia. Reading Scripture as from the Father, through the Son, in the Spirit, he secures a principled unity without dissolving the three into mere names. He leans on the scriptural distribution of 1 Corinthians 8:6, “yet for us there is one God, the Father, from whom are all things and for whom we exist, and one Lord, Jesus Christ, through whom are all things and through whom we exist” (1 Cor 8:6, NRSV). Origen frames this with his programmatic preface, which both affirms one God and signals inquiry about the Spirit’s mode:

“The particular points clearly delivered in the teaching of the apostles are as follow: First, That there is one God, who created and arranged all things, and who, when nothing existed, called all things into being, God in the last times sending Our Lord Jesus Christ into the world, who also is the only one who knows the Father, and the Word of God, who is in the bosom of the Father, He has explained Him. And the apostles further taught that the Holy Spirit is associated in honour and dignity with the Father and the Son. But in His case it is not clearly distinguished whether He is to be regarded as born or innate, or also as a Son of God or not; for these are points which have to be inquired into out of sacred Scripture according to the best of our ability, and which demand careful investigation. And that this Spirit inspired each one of the holy prophets, whether prophets or apostles; and that there was not one Spirit in the men of the old dispensation, and another in those who were inspired at the advent of Christ, is most clearly taught throughout the Churches.” (On First Principles, I.Preface)

This sets his “monarchy-first” posture and his willingness to investigate how the Spirit fits that monarchy without presuming creatureliness.

Second, eternal generation to avoid temporality or division: the Son’s origin is without beginning, like radiance from the sun, so that “from” does not imply “after” or “less.” Origen’s favorite images are simultaneity images–light and radiance, will and mind–deployed precisely to deny a before-and-after in God while keeping the Son’s origin genuinely “from the Father.” He argues:

“How then can it be asserted that there once was a time when He was not the Son? For that is equivalent to saying that there was once a time when He was not the Truth, nor the Wisdom, nor the Life, although in all these He is altogether inseparable from the Father. Nor is it less absurd to say that there was a time when He did not exist, than to say that there was a time when God was without these properties, which are His very essence. For it is the Trinity alone which is unchangeable and unalterable; but the whole creation is changeable and alterable. … The Son, being less than the Father, is superior to rational creatures alone (for He is second to the Father); the Holy Spirit is still less, and dwells within the saints only. … The only-begotten Son of God, who is His Wisdom and Word, was with Him from the beginning, not as if He had a beginning of being, but because the Son is eternally generated by the Father, as brightness is generated from light, or as the will proceeds from the mind. For the mind does not begin to will at some time, but always wills; and the brightness does not begin to shine at some time, but always shines. So the Son is eternally born of the Father, and is the brightness of His glory, and the express image of His person.” (On First Principles, I.2)

The first half of this paragraph does the positive work: repudiating any temporal beginning by tying the Son’s titles to God’s own essential perfections; the metaphors then press simultaneity and consubstantial likeness. At the same time, Origen’s inclusion of “less than the Father” language inside the same sweep shows how his idiom strains between safeguarding origin and avoiding gradation–a tension the pro-Nicene settlement will later resolve by reading “cause” as personal relation of origin, not a higher grade of deity, and by making the one essence, will, and energy explicit.

Third, real distinction without a second source: Father, Son, and Spirit are hypostatic and ordered, yet there is only one fountain of deity. Fourth, a participatory, but not creaturely, sharing of deity: the Father alone is “Very God” in Origen’s idiom; the Son is “God” by being from the Father, not by promotion from creaturehood. Fifth, ordered procession of the Spirit: the Spirit is third in taxis, sanctifying and deifying, whose origin Origen locates from the Father, often with “through the Son” in operation. The language Origen favors includes scriptural exegesis, metaphors of origin without loss, and technical cues before Nicaea such as aitia, archē, gennēsis, and taxis, as well as a pre-Nicene register of hypostasis and ousia and the autotheos versus theos distinction. In his own terms the “fix” is not a dialectic of unity versus plurality, nor a chain of emanations, but one monarchy with eternal, non-temporal relations of origin: the Father as sole source, the Son as eternally generated Wisdom and Logos, and the Spirit ordered third. What is not yet fully explicit in Origen is that this whole structure must be read as a single act-of-relation rather than as a highest “thing” plus its derivatives.

WHERE ORIGEN FALLS SHORT

Origen’s proposal does not finally deliver the equilibrium he seeks. He reserves “Very God” for the Father and treats what is beyond the “Very God” as divine by participation; he also leverages Johannine article-usage in a way that relocates “one God” to the Father’s hypostasis rather than to the single essence. The crux of both tendencies appears in a compact line that became programmatic for later debate:

” For the evangelist John also says, ‘No one has seen God at any time; the only-begotten Son, who is in the bosom of the Father, He has declared Him.’ And he used the article with ‘God,’ but without it with ‘Son,’ that we may understand the Father to be the true God, and the Son to be God by participation.” (On First Principles, II.6)

Read in continuity with the paragraph on eternal generation, the intention is not to deny the Son’s true divinity but to reserve unoriginate deity (autotheos) to the Father while affirming the Son’s deity as eternally “from.” Yet the terms “by participation” and the appeal to the article can be heard as gradable possession of deity rather than identity of essence. Joined to Origen’s willingness to speak of the Son as “second” (in order, not in kind), these moves leave pressures toward subordination that later theology neutralizes by clarifying that the unity is the numerically one essence, that “cause” names a personal relation of origin without superiority, and that the three act inseparably with one will and one energy.

Against this background, the pro-Nicene settlement supplies the missing grammar: “one God” equals one ousia; the Father’s primacy is causal only as to personal origin (“from Him, not after Him”); and inseparable operations rule out any “divided will” or “parted power.” In act-relational terms, the tradition discovers how to say that the one simple act-of-relation-as-gift is numerically identical with Father, Son, and Spirit without making the Father a higher share of that act.

GREGORY OF NAZIANZUS’S OFFER

Gregory of Nazianzus supplies the missing grammar in a way that is both theological and pastoral. He pins “one God” to the one divine nature:

“To us there is One God, for the Godhead is One, though we believe in Three Persons. For one is not more and another less God; nor is One before and another after; nor are They divided in will or parted in power; nor can you find here any of the qualities of divisible things; but the Godhead is, to speak concisely, undivided in separate Persons; and there is one mingling of Light, as it were of three suns joined to each other. When then we look at the Godhead, or the First Cause, or the Monarchia, that which we conceive is One; but when we look at the Persons in Whom the Godhead dwells, and at Those Who timelessly and with equal glory have their Being from the First Cause–there are Three Whom we worship.” (Gregory of Nazianzus, Oration 31.14, NPNF2 7)

He refuses to let monarchy be a sheer prerogative of one person. He redefines monarchy in terms that prevent subordination and preserve equality:

“But Monarchy is that which we hold in honour. It is, however, a Monarchy that is not limited to one Person, for it is possible for Unity if at variance with itself to come into a condition of plurality; but one which is made of an equality of Nature and a Union of mind, and an identity of motion, and a convergence of its elements to unity — a thing which is impossible to the created nature — so that though numerically distinct there is no severance of Essence. Therefore Unity having from all eternity arrived by motion at Duality, found its rest in Trinity. This is what we mean by Father and Son and Holy Ghost. The Father is the Begetter and the Emitter; without passion of course, and without reference to time, and not in a corporeal manner.” (Oration 29.2)

The Father is cause without superiority and without temporal priority. Gregory’s classic formula is concise:

“How then are They not alike unoriginate, if They are coeternal? Because They are from Him, though not after Him. For that which is unoriginate is eternal, but that which is eternal is not necessarily unoriginate, so long as it may be referred to the Father as its origin. Therefore in respect of Cause They are not unoriginate; but it is evident that the Cause is not necessarily prior to its effects, for the sun is not prior to its light. And yet They are in some sense unoriginate, in respect of time, even though you would scare simple minds with your quibbles, for the Sources of Time are not subject to time.” (Oration 29.3)

Names are relations, not essence or action:

“Father, they say, is a name either of an essence or of an Action, thinking to bind us down on both sides. … [W]e put both aside, and state a third and truer one, namely, that Father is not a name either of an essence or of an action, most clever sirs. But it is the name of the Relation in which the Father stands to the Son, and the Son to the Father. … [T]hey denote an identity of nature between Him That is begotten and Him That begets.” (Oration 29.16)

Equality and origin are held together:

“In my opinion He is called Son because He is identical with the Father in Essence; and not only for this reason, but also because He is Of Him. And He is called Only-Begotten … And He is called the Word, because He is related to the Father as Word to Mind; not only on account of His passionless Generation, but also because of the Union, and of His declaratory function.” (Oration 30.20)

Inseparable operations are taught by denying divided powers and wills, and by picturing the undivided Godhead in luminous unity (already included above within Oration 31.14). Gregory also neutralizes abuses of scriptural prepositions:

“I say the same of the names God and Lord, and of the prepositions Of Whom, and By Whom, and In Whom, by which you describe the Deity according to the rules of art for us, attributing the first to the Father, the second to the Son, and the third to the Holy Ghost. For what would you have done, if each of these expressions were constantly allotted to Each Person, when, the fact being that they are used of all the Persons, as is evident to those who have studied the question, you even so make them the ground of such inequality both of nature and dignity.” (Oration 31.20)

Full pneumatology is confessed with a precise placement of the Spirit:

“The Holy Ghost, which proceeds from the Father; Who, inasmuch as He proceeds from That Source, is no Creature; and inasmuch as He is not Begotten is no Son; and inasmuch as He is between the Unbegotten and the Begotten is God. … What then is Procession? Do you tell me what is the Unbegottenness of the Father, and I will explain to you the physiology of the Generation of the Son and the Procession of the Spirit….” (Oration 31.8)

And Gregory gives the apophatic fence:

“But the generation of the Son from the Father, and the procession of the Holy Spirit, are beyond our conception and knowledge. … The begetting of God must be honoured by silence, and we ought to believe that as God wished us to know it, He has revealed it, but what He has been silent about, we ought not to inquire into curiously.” (Oration 28.17)

WHY GREGORY MOSTLY SUCCEEDS AND WHAT HE LEAVES OPEN

Relative to Origen’s pressure points Gregory really does what he thinks he does. He relocates “one God” to the one ousia and retains the Father as source by reading cause as personal origin without priority or superiority. He makes the equality of Son and Spirit explicit and teaches inseparable operations. What he does not claim to provide is a mechanistic account of how generation and procession differ as modes. He fences the question apophatically, insisting that revelation gives the fact and that the manner is beyond us. He also keeps the dual phrasing of unity and monarchy side by side. In context, this is not a flaw; it preserves unity of nature together with personal order. In an act-relational key, Gregory is saying that the one act-of-relation-as-gift is numerically one in essence and energy, yet irreducibly three in relations of origin; the monarchy names the Father as the “from whom” of this act, not a separate possession of deity.

JOHN OF DAMASCUS’S OFFER

John of Damascus gathers the Cappadocian gains into a compact and orderly statement. His thesis is unambiguous and comprehensive:

“We believe, then, in One God, one beginning, having no beginning, uncreate, unbegotten, imperishable and immortal, everlasting, infinite, uncircumscribed, boundless, of infinite power, simple, uncompound, incorporeal, without flux, passionless, unchangeable, unalterable, unseen, the fountain of goodness and justice, the light of the mind, inaccessible; a power known by no measure, measurable only by His own will alone (for all things that He wills He can), creator of all created things, seen or unseen, of all the maintainer and preserver, for all the provider, master and lord and king over all, with an endless and immortal kingdom: having no contrary, filling all, by nothing encompassed, but rather Himself the encompasser and maintainer and original possessor of the universe, occupying all essences intact and extending beyond all things, and being separate from all essence as being super-essential and above all things and absolute God, absolute goodness, and absolute fullness: determining all sovereignties and ranks, being placed above all sovereignty and rank, above essence and life and word and thought: being Himself very light and goodness and life and essence, inasmuch as He does not derive His being from another, that is to say, of those things that exist: but being Himself the fountain of being to all that is, of life to the living, of reason to those that have reason; to all the cause of all good: perceiving all things even before they have become: one essence, one divinity, one power, one will, one energy, one beginning, one authority, one dominion, one sovereignty, made known in three perfect subsistences and adored with one adoration, believed in and ministered to by all rational creation, united without confusion and divided without separation (which indeed transcends thought). (We believe) in Father and Son and Holy Spirit whereinto also we have been baptized. For so our Lord commanded the Apostles to baptize, saying, Baptizing them in the name of the Father, Son, and Holy Spirit Matthew 28:19.” (John of Damascus, Exposition, I.8, NPNF2 9)

He articulates inseparable operations in the simplest grammar:

“Owing to the three subsistences, there is no compoundness or confusion: while, owing to their having the same essence and dwelling in one another, and being the same in will, and energy, and power, and authority, and movement, so to speak, we recognise the indivisibility and the unity of God.” (I.8)

He clarifies the Father’s primacy in a way that preempts subordinationist readings of John 14:28:

“But if we say that the Father is the origin of the Son and greater than the Son, we do not suggest any precedence in time or superiority in nature of the Father over the Son (for through His agency He made the ages), or superiority in any other respect save causation. … So then, whenever we hear it said that the Father is the origin of the Son and greater than the Son, let us understand it to mean in respect of causation.” (I.8)

Personal distinction is marked not by unequal essence but by “mode of existence”:

“Wherefore all the qualities the Father has are the Son’s, save that the Father is unbegotten, and this exception involves no difference in essence nor dignity, but only a different mode of existence. … These do not differ from each other in nature, for they are human beings: but they differ in the mode of existence.” (I.8)

John’s pneumatology is full and exact:

“Likewise we believe also in one Holy Spirit, the Lord and Giver of Life: Who proceeds from the Father and rests in the Son: … proceeding from the Father and communicated through the Son, and participated in by all creation, through Himself creating, and investing with essence and sanctifying, and maintaining the universe: having subsistence, existing in its own proper and peculiar subsistence, inseparable and indivisible from Father and Son, and possessing all the qualities that the Father and Son possess, save that of not being begotten or born.” (I.8)

And with careful balance he writes:

“We do not speak of the Spirit as from the Son: but yet we call Him the Spirit of the Son. … And we confess that He is manifested and imparted to us through the Son.” (I.8)

Perichoresis and the visible unity of divine action receive a vivid image:

“Nor do the Son and the Spirit stand apart, nor are they sundered in essence according to the diæresis of Arius. For the Deity is undivided among things divided, to put it concisely: and it is just like three suns cleaving to each other without separation and giving out light mingled and conjoined into one. When, then, we turn our eyes to the Divinity … what is seen by us is unity. But when we look to … the subsistences of the Son and the Spirit, it seems to us a Trinity that we adore.” (I.8)

He drives the inseparability home with an extended denial of any internal difference of will or power:

“For there the community and unity are observed in fact, through the co-eternity of the subsistences, and through their having the same essence and energy and will and concord of mind, and then being identical in authority and power and goodness — I do not say similar but identical — and then movement by one impulse. For there is one essence, one goodness, one power, one will, one energy, one authority, one and the same, I repeat, not three resembling each other. But the three subsistences have one and the same movement. … nor can one admit difference in will or judgment or energy or power or anything else whatsoever which may produce actual and absolute separation in our case. Wherefore we do not speak of three Gods … but rather of one God, the holy Trinity, the Son and Spirit being referred to one cause….” (I.8)

And he reprises the “one movement” formula with methodological precision:

“Here there is a distinction only in thought, and the subsistences dwell in one another without any confusion, according to the word of the Lord, I am in the Father, and the Father in me; and owing to the identity of essence and power, and energy, and will, and to the agreement and identity of mind, and to the movement from the same and to the same (which is the life of the Trinity, as far as we can attain to it), and to the one impulse and purpose of the same, which is the essence beyond essence, and the one movement of the three subsistences; for one is the essence and godhead and power of the Father and the Son and the Holy Spirit.” (I.8)

Finally, he restates the apophatic fence:

“And we have learned that there is a difference between generation and procession, but the nature of that difference we in no wise understand. Further, the generation of the Son from the Father and the procession of the Holy Spirit are simultaneous.” (I.8)

In act-relational terms, John is stating that there is one simple actus essendi, one esse-as-gift, numerically identical with the three subsistent relations; the monarchy of the Father is causal only at the level of personal provenance, not at the level of what the one act is.

WHY THE “HOW” REMAINS UNEXPLAINED

The tradition does not leave the “how” unaddressed out of ignorance or indecision. It leaves it unanalyzed for principled reasons. First, the inner mode of God exceeds creaturely comprehension. Gregory bids us “honour” the begetting with silence and calls any attempt to anatomize it a frenzy that forgets our finitude (Or. 28.17; Or. 31.8). Second, revelation gives the fact rather than the mechanism. John says Scripture teaches both generation and procession and that they are distinct, but that “the nature of that difference we in no wise understand” (I.8). Third, the reserve avoids importing material or temporal images, a caution Gregory repeats. Fourth, analogy governs divine discourse: any similarity implies a greater dissimilarity. Finally, reason can show coherence and fitness but cannot discover or measure the inner relations. The result is a principled apophatic fence that keeps confession intact without turning relations of origin into a mechanism. From the perspective of an act-relational ontology, this means that we know that the primitive is tri-personal act-of-relation-as-gift and that the Father is its unoriginate source, but we do not claim to know the “physics” of how that single act subsists as begetting and procession.

AD EXTRA MISSIONS AND INSEPARABLE OPERATIONS

If the inner “how” is fenced, the outer economy is pressed into service for teaching. Temporal missions manifest eternal processions without introducing novelty in God. Gregory’s grammar makes the hermeneutic concrete by denying any division in the divine act and will: “For one is not more and another less God; nor is One before and another after; nor are They divided in will or parted in power; nor can you find here any of the qualities of divisible things; but the Godhead is, to speak concisely, undivided in separate Persons; and there is one mingling of Light, as it were of three suns joined to each other. When then we look at the Godhead, or the First Cause, or the Monarchia, that which we conceive is One; but when we look at the Persons in Whom the Godhead dwells, and at Those Who timelessly and with equal glory have their Being from the First Cause–there are Three Whom we worship.” (Gregory of Nazianzus, Oration 31.14, NPNF2 7)

Gregory also refuses to let Scripture’s prepositions fragment the work of God. After noting the pedagogical order “Of Whom,” “By Whom,” and “In Whom,” he warns that the same expressions are “used of all the Persons,” so they cannot ground “inequality both of nature and dignity.” Appropriations are catechetical assignments, not partitions of labor in the Godhead: “I say the same of the names God and Lord, and of the prepositions Of Whom, and By Whom, and In Whom, by which you describe the Deity… attributing the first to the Father, the second to the Son, and the third to the Holy Ghost… the fact being that they are used of all the Persons….” (Oration 31.20, NPNF2 7)

John of Damascus consolidates the same rule in a systematic key by tying unity of act to unity of essence and will: “Owing to the three subsistences, there is no compoundness or confusion: while, owing to their having the same essence and dwelling in one another, and being the same in will, and energy, and power, and authority, and movement, so to speak, we recognise the indivisibility and the unity of God.” He then draws the operational conclusion: “Here there is a distinction only in thought… and the one movement of the three subsistences; for one is the essence and godhead and power of the Father and the Son and the Holy Spirit.” (John of Damascus, Exposition of the Orthodox Faith, I.8, NPNF2 9)

DEVELOPMENT AND COUNCILS

The Cappadocian and Damascene grammar was not left merely as idiom; it was received and defined. Lateran IV’s constitution Firmiter credimus gives the shared baseline by fixing “one God” at the level of essence while confessing three persons and explicitly naming the Spirit’s procession from the Father and the Son: “We firmly believe and openly confess that there is but one true God… the Father and the Son and the Holy Ghost: three persons indeed, but one essence, substance, or nature absolutely simple… The Father generating, the Son being born, and the Holy Ghost proceeding; consubstantial and coequal, co-omnipotent and coeternal; one principle of all things… The Holy Spirit proceeds from both equally, always without end.” (Lateran IV, Firmiter credimus, in Decrees of the Ecumenical Councils, ed. Norman P. Tanner, vol. 1)

Where Lateran IV states the common frame, Florence gives the precise filioque articulation that closes the pressure point Origen’s idiom left open while preserving the Father as single fons: “In the name of the holy Trinity, Father, Son and holy Spirit, we define… that the holy Spirit is eternally from the Father and the Son, and has his essence and his subsistent being from the Father together with the Son, and proceeds from both eternally as from one principle and a single spiration. We declare that when holy doctors and fathers say that the holy Spirit proceeds from the Father through the Son, this bears the sense that thereby also the Son should be signified… And since the Father gave to his only-begotten Son in begetting him everything the Father has, except to be the Father, so the Son has eternally from the Father… this also, namely that the holy Spirit proceeds from the Son.” (Council of Florence, Laetentur caeli and Cantate Domino, in Decrees of the Ecumenical Councils, ed. Norman P. Tanner, vol. 1)

Set alongside this conciliar teaching, Gregory’s and John’s verbs and images take on dogmatic clarity. Gregory’s refusal of “divided will” and “parted power” names the indivisible exercise of one divine operation; his “one mingling of Light… of three suns” depicts unity of act in the inseparably operating Trinity (Oration 31.14, NPNF2 7). John’s “same in will, and energy, and power… one impulse… one movement of the three subsistences” gives the conceptual backbone for reading all missions ad extra as manifestations of relations of origin ad intra (Exposition, I.8, NPNF2 9). Taken together with Lateran IV’s “absolutely simple” essence and Florence’s “one principle and a single spiration,” the tradition supplies the controlling grammar: one God and one undivided divine operation; three persons distinguished by relations of origin; missions that reveal, not re-divide, the eternal processions.

SCRIPTURAL GRAMMAR AND THEOLOGICAL METHOD

The thread that binds these figures is a shared scriptural grammar. First Corinthians 8:6 is not treated as a dividing line between two deities but as an ordered confession:

“yet for us there is one God, the Father, from whom are all things and for whom we exist, and one Lord, Jesus Christ, through whom are all things and through whom we exist.” (1 Cor 8:6, NRSV)

Origen leans on this distribution to frame from-through-in without temporal sequence. Gregory keeps the same text but relocates the unity from the Father’s hypostasis to the common nature without losing personal order, and then tightens the use of prepositions so that “of,” “through,” and “in” do not grade deity (Or. 31.20). John reads the same passages with the mature rule that there is one essence, one will, one energy, and that the distinct persons are distinguished by their modes of origin while acting with one movement. The textual horizon is complemented by Hebrews 1:3 and John 1:1, which allow the Fathers to speak of consubstantial equality and perichoretic action without speculation about mechanism. And the Christological debates explode the horizon and provide the solidifying motivation to get this issue right.

ON MONARCHY, ESSENCE, AND PERSONS

Two framing questions make the difficulty precise: the consensus question that developed in response and after Origen: “How can we confess the Father’s monarchy–His personal causality ‘from whom’–without relocating unity to the Father’s person or subordinating the Son and Spirit, but instead keeping ‘one God’ at the level of the single essence, will, and operation?” Vs Origen’s concern: “How can ‘one God’ be confessed as the Father–the sole fons and aitia–while still affirming the Son’s eternal generation and the Spirit’s ordered procession so that there is no temporal before-and-after, no two Gods, and yet real hypostatic distinction (autotheos for the Father; theos for the Son without creatureliness)?” What developed vs Origen’s concern shows us the difficulty.

The difficulty is the relation between monarchy and essence. If monarchy is read as a property of the Father’s person that grounds unity at the level of who rather than what, one risks making unity the private possession of the Father and thus raising the specter of a fourth thing over against the shared essence. If monarchy is read as a feature of the essence, one risks erasing the Father’s primacy as source. The pro-Nicene resolution preserves both truths. Gregory and John teach the Father as cause of persons “from Him, though not after Him” without making Him a higher deity (Oration 29.3), and they teach one essence, one will, and one operation without collapsing personal distinctions: “one movement of the three subsistences” (John of Damascus, Exposition, I.8). This is the idiom of one essence, one will, one energy, and one operation truly. In act-relational terms, they are saying that the one simple act-of-being-towards-another (God) is numerically one, while the Father’s monarchy is the way this act has its unoriginate “from-no-one” provenance.

Gregory of Nazianzus states the balance with programmatic clarity. First, he relocates “one God” to the level of nature without losing personal order and explicitly denies any division of will or power:

Second, he defines monarchy so that it guards equality of nature and identity of motion, rather than establishing a prerogative that would imply superiority:

“But Monarchy is that which we hold in honour. It is, however, a Monarchy that is not limited to one Person, for it is possible for Unity if at variance with itself to come into a condition of plurality; but one which is made of an equality of Nature and a Union of mind, and an identity of motion, and a convergence of its elements to unity–… so that though numerically distinct there is no severance of Essence. Therefore Unity having from all eternity arrived by motion at Duality, found its rest in Trinity. This is what we mean by Father and Son and Holy Ghost. The Father is the Begetter and the Emitter; without passion of course, and without reference to time, and not in a corporeal manner.” (Oration 29.2, NPNF2 7)

Third, he gives the causal grammar that avoids temporal priority or a graded deity:

And he blocks misuse of biblical prepositions as if they graded nature or split the work:

“I say the same of the names God and Lord, and of the prepositions Of Whom, and By Whom, and In Whom… attributing the first to the Father, the second to the Son, and the third to the Holy Ghost… the fact being that they are used of all the Persons….” (Oration 31.20, NPNF2 7)

John Henry Newman, reading the same settlement historically, draws out the epistemic and grammatical upshot. On the one hand, he stresses that dogmatic statement secures the revealed fact (unity of essence, relations of origin, inseparable operation) while bracketing the “how”:

“Thus the systematic doctrine of the Trinity may be considered as the shadow, projected for the contemplation of the intellect, of the Object of faith, which we cannot see as He is.” (The Arians of the Fourth Century, ch. 1)

On the other hand, he treats the Cappadocian refinement of terms and their practical rule as precisely what resolves the monarchy/essence tension–causality as hypostatic relation, unity as one ousia, and prepositional “of/through/in” as pedagogical order rather than partition of labor. In short, the grammar that Gregory articulates is the very “shadow” (in Newman’s sense) by which the Church confesses without pretending to anatomize.

Bonaventure then gives the same resolution a compact scholastic form, centering the Father’s primacy as font without compromising the numerical unity of essence or the unity of operation. His Trinitarian short-form is classic:

“Pater totam divinitatem possidet non ab alio acceptam, sed per fontalem plenitudinem; Filius autem a Patre per aeternam generationem; Spiritus vero sanctus ab utroque per aeternam spirationem.” (Breviloquium, I.2)

And he immediately couples that origin-grammar with unity of essence and act:

“Una est essentia, una aeternitas, una immensitas, una potestas et una operatio trium personarum.” (Breviloquium, I.2)

Together, these three voices converge on the very questions with which we began. Monarchy is safeguarded as the Father’s causal primacy “from Him, though not after Him” (Nazianzus); the unity that makes “one God” is the single essence, will, energy, and operation (Nazianzus; Bonaventure); and the rule for reading Scripture and the economy is inseparable operations with pedagogical appropriations rather than divided tasks (Nazianzus; Newman’s dogmatic analysis). The Father’s primacy is hypostatic and non-competitive; the unity is essential and indivisible; and what is “from” is not “after,” nor “less.” This is exactly the balance the pro-Nicene settlement uses to answer both guiding questions, and it is exactly the space in which an act-relational primitive can be named without disturbing the tradition.

PRACTICAL PAYOFFS

This grammar protects worship, preaching, and doxology. Confessing one essence with three persons ensures that Christian prayer “through the Son in the Spirit” reaches the Father without implying three competing deities. Teaching inseparable operations prevents any liturgical or devotional ranking of the persons. Holding the apophatic fence around the “how” of origin prevents us from imagining God as a material series or a temporal cascade. Reading the missions as manifestations secures the confession that novelty is on the creaturely side, not in God. In act-relational idiom, it ensures that the one act-of-relation-as-gift remains necessary and immutable in se, while all temporal change belongs to the horizon of inscription in which creatures are given to participate.

AUGUSTINE AND THOMAS AS INTERPRETERS

Augustine stabilizes the rule one God equals one essence, ties processions to missions, and makes inseparable operations a hermeneutic key, while declining to speculate about mechanisms. Thomas Aquinas gives the conceptual polish that clarifies the grammar. He frames the persons as subsistent relations, distinguishes two processions as intellect and will, insists on one power and one operation and expresses the filioque as from the Father and the Son as one principle, while preserving the Father as single fount. These moves carry forward, rather than overturn, the Cappadocian and Damascene settlement. In the vocabulary of act-relational ontology, Augustine and Thomas are the ones who implicitly treat actus essendi as always already Actus Essendi ad Alium, never a sheer, non-relational esse behind the relations.

Metaphysics, hermeneutics, and the rule of faith

The doctrinal solution and the metaphysical/hermeneutical toolkit co-evolved. Origen’s program sharpened the questions; the Cappadocians, Augustine, John of Damascus, and the medievals supplied the settling grammar; the councils canonized it. The upshot is precisely the consensus this essay is tracking: “one God” at the level of the single essence, the Father’s primacy as personal source “from whom,” and inseparable operations that safeguard both unity and real hypostatic distinction.

The rule of faith fixed the data of worship and baptism–“from the Father, through the Son, in the Holy Spirit”–and set guardrails: no fourth thing above the three, no rivalry of principles, no temporal before-and-after in God. Within those bounds, Origen pressed Scripture’s distribution and metaphors to avoid both modalism and emanation, even as his idiom left tensions. The Cappadocians then stabilized the grammar: one ousia, three hypostaseis; “cause” as hypostatic origin (“from Him, not after Him”); refusal of “divided will” or “parted power.” Augustine welded missions to processions and turned inseparable operations into a hermeneutic key. John of Damascus systematized the whole: one essence, one will, one energy, “one movement of the three subsistences.” The medievals gave conceptual finish–persons as subsistent relations, filioque as “one principle,” unity of operation explicated–so that the same worship grammar could be spoken with metaphysical precision.

In parallel, hermeneutics matured with the metaphysics. The classical “literal sense” became an ordered reading under the rule of faith and by analogy: biblical prepositions (of/through/in) mark personal order without grading deity; missions manifest processions; appropriation is pedagogical, not a partition of labor. Apophatic reserve drew a principled fence around “generation” and “procession”: revealed as facts, not mechanisms. Thus the same scriptural idiom that Origen deployed could be read with a clarified lens that preserved both the monarchy of the Father and the numerically one essence, will, and operation.

Finally, the councils canonized the settled grammar. Nicaea and Constantinople established homoousios and the full deity of the Spirit; Lateran IV fixed “one essence… absolutely simple” with three persons; Lyons II and Florence specified the Spirit’s procession “from the Father and the Son as from one principle and by one spiration,” preserving the Father as single fons. Taken together, doctrine and toolkit rise in tandem: the metaphysical distinctions express the rule of faith; the hermeneutic rules safeguard how Scripture is read; and the conciliar definitions anchor the balance this essay defends–unity of essence, hypostatic monarchy without superiority, and inseparable operations ad extra.

CONCLUSION

The main issue is whether one can confess one God without reducing the three to modes, and whether one can confess real personal distinctions without introducing rank or multiple sources of deity. Origen offers a sincere and ingenious path by reading one God as the Father’s monarchy with eternal generation and ordered procession. His idiom, however, leaves the unity lodged in the Father’s person and treats the Son’s divinity in terms that can be heard as participatory and sustained. Gregory of Nazianzus relocates unity to the shared nature, redefines monarchy in terms of equality of nature, union of mind, and identity of motion, and secures the Father’s primacy as personal cause “from Him, though not after Him.” John of Damascus consolidates the grammar with crystalline clarity: one essence, one will, one energy, one movement of the three; the Father as cause without superiority or priority; the Son eternally begotten and equal; the Spirit from the Father and through the Son, fully and equally God; perichoresis and inseparable operations. The tradition then draws principled limits around the “how” of generation and procession, and it develops a precise account of missions and of the Spirit’s procession that closes the ambiguities of an earlier idiom.

Viewed through an act-relational lens, the same settlement can be restated as follows. “One God” names the one simple act-of-relation-as-gift, Actus Essendi ad Alium, numerically identical with Father, Son, and Spirit. The monarchy of the Father names the unoriginate provenance of this act, not a deeper layer of non-relational essence behind it. The Son and the Spirit are eternally “from” the Father (and, in the Latin idiom, the Spirit from the Father and the Son as from one principle) without being “after” Him or “less” than He. Inseparable operations express the fact that this single act-of-relation-as-gift is one in will, power, and energy, even as it subsists in three irreducible relations of origin. The result is a settled way to say what the Church must say and to refrain from saying what it cannot: one God, one nature, three persons distinguished by relations of origin, whose one operation is revealed in the economy for our salvation.

BIBLIOGRAPHY

Augustine of Hippo. The Trinity. Translated by Edmund Hill. Brooklyn, NY: New City Press, 1991.

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