05/31/2026
HOMILY for Trinity Sunday, May 31, 2026
St Paul’s, Winnfield
Frank Fuller
Genesis 1:1-2:4a, 2 Corinthians 13:11-13, Matthew 28:16-20, Canticle 13 (or Canticle 2)
Today begins the long, green season: the Sundays after Pentecost. This moring, we start by thinking about God. Never a bad way to begin any season – or any day, for that matter. Since this is Trinity Sunday, we think about God in the mystery that is the Trinity, God in Three Persons.
Mysteries, in theological terms, are, by definition, incomprehensible. Certainly The Trinity is no exception. If you open the Book of Common Prayer in front of you, and turn to page 864, to the sixth-century creed of St. Athanasius, you will find the official word: “The Father incomprehensible, the Son incomprehensible, and the Holy Ghost incomprehensible.”
Or, as Dorothy Sayers wrote, “the father incomprehensible, the Son incomprehensible, and the whole thing incomprehensible.”
Some biblical references speak of the Father, Son and Holy Spirit, but the Trinity does not come explicitly from scripture. It is a great irony — and grace — that the doctrine emerged out of attempts, in the early centuries of the current era, to know the nature and relationship of God, Jesus, and the Holy Spirit. They could go only so far in figuring this out, so what we have is a mystery. But that’s just what you get when you think about God.
You have heard me say before, if someone tells you that he knows all about God, only two things are possible: he’s not telling the truth, or it isn’t God he’s talking about. The full nature of God cannot be grasped by human mind. Still, we try, and by trying, we learn more about God and about ourseves.
It is in the Trinity that we think about God as a family. There is a whole theology of how the persons of the Trinity relate to each other. It’s called “Perichoresis.” Never fear, I’m not going even to try.
Nonetheless, in addition to what the doctrine of the Trinity says about the way persons of God relate to each other, it tells a great deal about the way God relates to each of us. There is something in the Trinity that opens the multiple ways in which God makes God’s own self known.
It is in the Trinity that we internalize our concept of God, experience God, and integrate that experience with our own experience and values. The way to seek to know God as Trinity becomes the same way to seek to know another person, by full engagement. By entering into relationship. By being part of the family,
No one can know God without entering into relationship, in all that that means in human terms and more. Entering into relationship means opening hearts, making oneself vulnerable. The Trinitarian God is relational. And so are we all.
That is how the three persons of the Trinity relate to us, to you and me individually, to us as a community, and to creation as a whole.
This is the relation of the Trinitarian deity, even though it remains a mystery. There’s more that we don’t know; there will always be more.
What we do know is that we are invited into this mystery of Trinitarian relatedness. In Christ, in baptism, we are invited into this relationship with a god whom we understand as being always and irreducibly in relationship. The Trinitarian God is love made visible, and we in turn, are filled with this love.