God Is Not Alone, but Communion

Stained-glass window of the Holy Trinity with the hand of God, the Lamb of Christ, and the dove of the Holy Spirit.

A stained-glass image of the Holy Trinity, showing the Father, Son, and Holy Spirit through traditional Christian symbols.

On the Most Holy Trinity: the central Mystery of the faith is that the origin of everything is not solitude but communion—and we are invited in.
— Michiel Peeters
Michiel Peeters ENGLISH - God is not alone
Michiel Peeters FRANÇAIS - Dieu n’est pas seul
Michiel Peeters ITALIANO - Dio non è solo
Michiel Peeters ESPAÑOL - Dios no está solo

Michiel Peeters - On the Most Holy Trinity: the central Mystery of the faith is that the origin of everything is not solitude but communion—and we are invited in.

Today we celebrate the central Mystery of the Christian faith: that God is Trinity. There is one God—but he is not alone. In God there are three Persons. He is a communion, a friendship, a companionship. Into this we were baptized; in this Name we begin our prayers.

Pause on that, because everything else follows from it. If the origin of all that exists is not a solitary monad but a communion of Persons, then the human I—made in that image—is itself irreducible. The I is not a thing to be explained away or a function to be optimized; it is a person, and a person comes to be only in relationship. You cannot reduce the I, because at the root of reality there is already a “We.”

It’s not the kind of thing you make up. For me, the dogma of the Trinity is a proof of the divine nature of Christianity—people simply would not have come up with it.

God doesn’t reveal himself as Trinity all at once. His self-revelation unfolds in time; it respects our capacity to understand. In the Old Testament, Jahveh reveals himself as the one God. Among the many peoples and their many gods, the God of Israel presents himself not as the god of one nation but as the God of the universe—the “Maker of heaven and earth, of all things visible and invisible.”

In the New Testament we meet Jesus—and before the Trinity is ever a doctrine, it is An Event: a man who does what only God can do, like forgiving sins; who makes claims on us only God could make; who speaks of himself the way only God can. He calls God his “Father,” claiming a relationship with him unlike the one the rest of us have with the Mystery. In the end, when they put Jesus to death, it is because “he not only broke the sabbath but also called God his own Father, making himself equal to God.”

Jesus reveals the Holy Spirit, alluding to him little by little. When the hour of his glorification arrives, he promises the Apostles the Spirit of truth, the “other Comforter”—whom the Father will send in Jesus’s name, and whom Jesus himself will send from the Father’s side, since the Spirit comes from the Father. The Holy Spirit will teach us everything, remind us of all that Christ said, and lead us into all truth.

Finally, Christ commands the Apostles to “make disciples of all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Spirit.”

Perhaps the most beautiful image of the Trinity is the one the Russian iconographer Andrei Rublev painted in the early fifteenth century—Father, Son, and Holy Spirit (the Father on the left, the Son in the middle, the Holy Spirit on the right). Their stature and their faces are identical: they are equal. But their vestments, the turn of their faces, their relationships—these differ. All three wear blue, which speaks of divine life. The Father, though, wears the pink-gold mantle of the Emperor, marking his power and glory, his being the origin of everything, even of the other two. The Son wears red, the color of sacrificed love, and the priestly stole: by becoming man he becomes the true priest, the one who in our name offers the perfect sacrifice to the Father. The Holy Spirit—the “Giver of Life”—wears green as well, the color of creation’s life. Everything receives its life from the Holy Spirit.

Their communion shows in this: they are seated together at a common meal, sharing a cup, a feast. “I have food to eat of which you do not know.” The Father gives the cup to the Son. “My food is to do the will of the one who sent me and to finish his work.” And the Holy Spirit looks out toward us—he makes it possible for us to enter the communion of God, to share his cup, his life, his love, of which, in the Eucharist, we already have a real foretaste.

And here something in us recognizes what it has always been waiting for. The heart’s desire is structurally out of all proportion to anything the world can hand it—no achievement, no possession, no love at our own scale is large enough to answer it. That structural disproportion is not a defect; it is the exact shape of an invitation, and what corresponds to it—its Correspondence—is the communion of God himself. The Trinity, then, is not finally an abstraction but A Presence that draws near, offering the one thing that matches the size of the human heart.

This is what the Mystery of the Trinity tells us: that we are invited to take part in a love, a communion, a friendship so profound that everything—everything—comes from it. It is where we come from, and it is our Destiny.

On the Most Holy Trinity: the central Mystery of the faith is that the origin of everything is not solitude but communion—and we are invited in.

Homily by Fr Michiel Peeters · Tilburg University Chaplaincy

Most Holy Trinity (Year A) — Exodus 34:4b–6, 8–9; 2 Corinthians 13:11–13; John 3:16–18

Michiel Peeters

Michiel Peeters, a Dutch Catholic priest and Tilburg University chaplain, is associated with Communion and Liberation. He engages students in faith discussions, addresses modern objections to religion, and bridges contemporary culture with Catholic spirituality. Peeters contributes to translating movement literature and organizing events, becoming an influential voice in Dutch religious discourse.

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Someone Who Cheers Us On