Aseity
Aseity
Aseity designates the absolute non-derived and non-participated actuality of God. Etymologically, a se means “from himself,” but this should not be taken to mean that God somehow causes, grounds, or gives existence to himself. It means rather that the divine being is not received from another, does not depend upon anything more fundamental, and possesses the fullness of actuality intrinsically. In a Trinitarian grammar, however, this aseitic divine life is never an impersonal substance standing behind the persons. The one self-subsisting divine actuality is wholly Father, wholly Son, and wholly Holy Spirit.
This gives aseity an irreducibly personal character without turning it into a personal property that distinguishes one divine person from another. The Father is personally from no one, the principium sine principio, the source without a source. The Son is eternally from the Father, and the Spirit eternally proceeds. Yet neither the Son nor the Spirit therefore possesses deity dependently, partially, or by participation. What is communicated in the divine processions is not a lesser share of divinity but the one undivided divine life itself. Essential aseity therefore belongs wholly to each person, while personal non-origination belongs uniquely to the Father.
Seen in this light, aseity is not an abstract attribute added to an otherwise complete concept of God. It expresses something fundamental about the very mode of divine existence: God is not one being among others, constituted by conditions prior to himself. The divine life is absolutely from no other and therefore wholly possessed in each person. Yet this fullness is not solitary. The one divine actuality subsists personally as Father, Son, and Spirit, so that divine self-possession is eternally personal, relational, and communicative without becoming dependent, composite, or divided.
There is therefore a genuine personalist insight available here, provided it is disciplined by the older metaphysics. Divine personhood is not modeled on three autonomous individuals who first exist in themselves and only afterward enter into relationships. In God, relation belongs intrinsically to personal identity. The Father is Father precisely in relation to the Son, the Son is Son precisely as eternally from the Father, and the Spirit subsists according to procession. The relations do not connect three independently constituted divine subjects. They are the personal distinctions within the one numerically identical divine actuality.
This also clarifies the language of gift. The divine processions can fittingly be described as perfect communication or self-gift, especially in Augustinian, Bonaventurian, and personalist idioms, so long as “gift” does not imply transfer between separate possessors. The Father does not retain one divine actuality while giving another to the Son. The whole undivided divine essence is communicated in generation without loss, partition, or inferiority. The Son’s being from the Father is therefore not the opposite of aseity in the essential sense. It is the personal mode in which the Son wholly possesses the same aseitic divine life.
Identity in God consequently cannot be reduced either to a thin numerical sameness or to an unrestricted relational flux. Numerical unity remains indispensable: there is one and the same divine actuality, not three instances of deity. But this unity is personally subsistent. Divine identity is therefore one without solitude and relational without division. Essence and relation are not competing principles. Whatever belongs to the divine essence is absolutely one, while the persons are really distinct precisely where relations of origin are opposed.
Aseity, then, names the absolute and nonparticipated fullness of the one divine life. Personally considered, that life is not an isolated monad but the living communion of Father, Son, and Holy Spirit. The Father is the unoriginate personal font, the Son eternally receives the whole divine life in generation, and the Spirit eternally proceeds without any diminution or multiplication of deity. The personalist insight is therefore not that relationship replaces substance, but that the one self-subsisting divine actuality is eternally and irreducibly personal. Divine fullness and divine communion are not two realities subsequently joined together. They are the one God.