The Trinity, mystery and relationship: homily for Trinity Sunday

This month I’ve been asked to contribute Sunday homilies to the Homiletic and Pastoral Review. You can find the rest of the month’s homilies there as well. Here’s this week’s contribution:


Homily for Trinity Sunday (C)

The Holy Trinity, Camarines Sur, 18th century, molave wood (St. Augustine Museum, Manila)

There’s an old saying, which probably goes back to Socrates, that the more you know, the more you realize you don’t know.  This observation on what it means to be truly wise is not meant to discourage learning or study or reflection.  When used in a Christian context it’s not meant to suggest, for example, that our faith should be reduced to a couple of folksy slogans.  Nor does it mean that when reflecting on the doctrine which we remember today—the Most Holy Trinity—that we should take an anti-intellectual approach—it’s a mystery, just have faith, don’t ask any questions.

The Trinity is a mystery, but today’s readings suggest the attitude we should have toward “mystery” in the context of our faith.  Calling the Trinity a mystery means that we will never get to the end of understanding it, but that should not make us want to throw up our hands and give up.  Instead, it should make us want to know more.  There’s a great history podcast that I listen to, and, after each episode, I often want to go online and start buying books about the subject to discover more.  Usually, I have to restrain that impulse because the books start to pile up and I don’t have time to read them!  

When we talk about the mysteries of our faith, that’s the dynamic we’re suggesting: not that we don’t want any questions, but that there will always be more to say and our capacity to learn is limited. Jesus suggests as much in the Gospel when he ways, “I have much more to tell you, but you cannot bear it now.”  Those words tell us something important about God.  Jesus talks about knowing the Father by seeing the Son and living in the Spirit of truth.  If you tried to diagram what that meant, you might end up with a triangle and lots of arrows going back and forth between the angles.  Perhaps that’s not a bad start because one thing that we can take from the invitation of Jesus to know him and know his Father and know the Holy Spirit is that he is inviting us into a relationship that will change us.  It’s a relationship that, in a way, is always moving.

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Trinity Sunday homily

If you go to Mass on Trinity Sunday, there’s a very good chance that you will hear the word “mystery.”  What does that word “mystery” mean?  When we’re talking about a mystery of faith, it doesn’t mean a detective story.  A mystery of faith is something we can always understand more deeply, something we can never reach the end of, something that never gets old.  No matter how many times you see the sunset across the ocean, the beauty of it is always new, the colors always a little different each time.

Sunset, Malta

Trinity Sunday is a celebration of the mystery of God.  To be more precise, it’s a celebration of the fact that God has given us a starting point to discover him, to know him, and to be united with him.  God is so different than anything we know that without his help we could say almost nothing about him.  God is not a very big thing.  He’s not like a gas that gets into the nooks and crannies of everything.  He’s not nature and the universe.  We know he’s the Creator of the universe because the universe exists, but nothing in the universe is capable of creating the universe.  And it’s true that he exists and we exist, but even his way of existing is different than ours.  You know who Harry Potter is, so in a way he exists.  But he doesn’t exist in the same way that J.K. Rowlings exists.  They have different ways of being.  And it’s the same with us and God.

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