How do the persons of the Trinity communicate with each other?
Question 2011
Ask a group of Christians whether God speaks to Himself and you will likely get some puzzled looks. The question seems either too obvious to bother with or too speculative to answer. In reality it touches something genuinely profound about the nature of the Trinity, and Scripture gives us more material to work with than might first appear.
Starting with What We Know
The Trinity is not three gods who happen to cooperate. The Father, Son, and Holy Spirit are three distinct persons sharing one divine Being, one will, one nature, one purpose. What this means for the question of intra-Trinitarian communication is that we are not talking about communication in the way two separate human beings exchange information. When one person tells another something, the other person did not previously know it. Information travels across a gap. None of that applies within the Godhead.
God’s knowledge is complete, eternal, and shared. There is no information the Father possesses that the Son lacks, and no gap between the persons across which messages need to pass. The trinitarian persons do not need to update each other on developments, negotiate plans, or fill in gaps in one another’s understanding. The divine mind is one, undivided, without deficiency.
What Scripture Shows Us
And yet Scripture does give us something remarkable: recorded exchanges within the Godhead that break the surface of history and become visible to human observers. The most striking are those moments surrounding the ministry of Jesus.
At Jesus’ baptism, a voice from heaven declares, ‘This is my beloved Son, with whom I am well pleased’ (Matthew 3:17). At the transfiguration, the same voice speaks again: ‘This is my beloved Son, with whom I am well pleased; listen to him’ (Matthew 17:5). These are moments of address within the Godhead that become audible within history.
More extensive still is the High Priestly Prayer of John 17, where Jesus prays to the Father in extended, intimate conversation. He speaks of shared glory before the world existed (John 17:5), of the love between the Father and the Son (John 17:24), and of a mutual indwelling that preceded creation. This is not a performance staged for the disciples’ benefit while inwardly unconcerned. The prayer expresses genuine communion between the Son and the Father within the conditions of the incarnation.
The Spirit, too, is presented as one who communicates and is communicated with. Romans 8:26-27 describes the Spirit interceding for believers, with the Father who searches hearts knowing what the Spirit intends. There is exchange here, though its nature exceeds human categories.
Communion Rather Than Communication
Perhaps the better word for what happens within the Godhead is communion rather than communication. Communication implies the movement of information from one who has it to one who lacks it. Communion is a different matter altogether. It is the full, mutual sharing of life, knowledge, will, and love between persons who are genuinely distinct and yet entirely one.
The love the Father has for the Son (John 3:35; 17:24) is not a sentiment but an eternal, unchanging reality. The Son’s submission to the Father, which is best understood as a genuine and eternal functional subordination rather than a merely temporary arrangement for the incarnation, is not reluctant compliance but an expression of who He eternally is in relation to the Father. The Spirit’s eternal procession from the Father and the Son reflects a permanent relational reality, not a role adopted for the purposes of redemption.
What we see in the recorded moments of trinitarian interaction in Scripture is this eternal communion breaking through into time and becoming audible and visible. The love, the delight, the address, the obedience, the sending and being sent – none of these began with the incarnation or with creation. They are expressions in history of what is permanently and eternally true of God in Himself.
The Limits of Our Language
Human language reaches its limits here faster than in almost any other area of theology, and honesty about that is not a weakness. Words like ‘communication’, ‘conversation’, ‘exchange’, and ‘dialogue’ all carry assumptions about time, information gaps, and sequential events that simply do not apply to the eternal Being of God. We use them because we have no other vocabulary, not because they capture what is actually taking place within the Godhead.
What we can say with confidence, because Scripture warrants it, is that the three persons of the Trinity exist in a relationship of perfect, unbroken, mutually self-giving love and knowledge. The Father delights in the Son (Matthew 3:17). The Son seeks the Father’s glory (John 17:1). The Spirit glorifies the Son and takes what belongs to Him (John 16:14). These are not performances staged for humanity’s benefit. They reflect what God is in Himself, as He has been from all eternity.
So, now what?
For the believer, this matters in a deeply personal way. Jesus told His disciples in John 17:21 that His prayer was that they might be one, ‘as you, Father, are in me, and I in you.’ The model for Christian fellowship and unity is nothing less than the communion within the Godhead. More striking still, the same chapter goes on to speak of believers being brought into that communion: ‘that they may be one even as we are one, I in them and you in me’ (John 17:22-23). The eternal communion of the Trinity is not simply a theological puzzle for academics. It is the pattern and ground of the believer’s own relationship with God.
“I do not ask for these only, but also for those who will believe in me through their word, that they may all be one, just as you, Father, are in me, and I in you, that they also may be in us.” John 17:20-21
