inseparable operations

In my gift-ontology, inseparable operations means that all divine works ad extra are undivided works of the one God. There are not three external acts, one for the Father, one for the Son, and one for the Holy Spirit. There is one divine essence, one divine will, one divine power, and therefore one divine act in relation to creation. Creation, redemption, sanctification, providence, judgment, and grace are not partitioned among the Persons as if each possessed a separate sphere of action. Whatever God does toward creatures, the one God does.

This doctrine follows directly from divine simplicity. If God is simple, then God is not composed of multiple powers, multiple wills, or multiple agencies. The divine act is one because the divine essence is one. The Father, Son, and Holy Spirit do not each contribute a portion of a larger cooperative work. Rather, the one simple divine act is wholly the act of the Father, wholly the act of the Son, and wholly the act of the Holy Spirit, because each Person is the one God. In this sense, inseparable operations is the ad extra expression of simplicity and consubstantiality.

At the same time, inseparable operations does not erase personal distinction. The tradition speaks of taxis, the ordered manifestation of the one act: from the Father, through the Son, in the Holy Spirit. This order does not divide the act into parts. It names the relational order according to which the one undivided divine action is fittingly confessed and manifested. The Father is the principle without principle, the Son the eternally begotten Word through whom all things are made, and the Holy Spirit the proceeding Gift and Love in whom divine works are perfected and applied. Taxis therefore gives personal order without multiplying acts.

This is why inseparable operations is also a necessary anti-tritheist safeguard. It prevents us from imagining Father, Son, and Spirit as three centers of agency collaborating from alongside one another. That picture would introduce a society of divine agents rather than the one God. The doctrine instead insists on one agency, one action, one causal act of the one simple God, personally subsisting as Father, Son, and Holy Spirit. The distinctions among the Persons remain real, but they are not distinctions of separate external action. They are distinctions of subsisting relations of origin within the one divine life, and that one divine life acts indivisibly toward creation.

So inseparable operations means this: whatever God does outside himself, the Father does, the Son does, and the Holy Spirit does, not as three actions, but as one undivided act of the one God. The personal order remains irreducible, but the operation remains one. In that way the doctrine preserves both divine unity and personal distinction without collapse into modalism on the one hand or tritheism on the other.