Sermon: 31st May 2026 St Andrew’s Indooroopilly
Theme: Trinity Sunday
Prayer:
O Saviour Christ, in whose way of love lies the secret of all life and the hope of all people. We pray for quiet courage to match this hour. We did not choose to be born or to live in such an age but let its problems challenge us, its discoveries exhilarate us, its injustices anger us, its possibilities inspire us, and its vigour renew us. For your Kingdom’s sake. Amen
Welcome to Trinity Sunday. Welcome also to my first preaching opportunity at St Andrew’s after my retirement due to ill-health. Now, I’m going to do something I have never done before in thirty years of preaching and that is not refer to the readings set for us this morning. I’m going to focus on the question why we worship God as Trinity. If you want a good analysis of the readings, you could look up Professor Andrew McGoveran’s article on these readings or even ask our resident Scripture Scholar Reverend Canon Dr Marion Free for a reflection. But I’m going to talk about the Trinity.
Even at the best of times, it’s hard to get excited about Trinity Sunday. Most Christian festivals honour events that are fun to describe and dramatise. The angel Gabriel’s appearance to Mary, Jesus’s transfiguration atop a mountain, his birth and resurrection, the arrival of the Holy Spirit last week at Pentecost. But Trinity Sunday is the only Sunday in the liturgical Christian year that invites us to celebrate an idea. A theological abstraction that’s beyond our understanding. One in three? Three in one? Huh?
Needless to say, we are not living in the best of times. All over the world, catastrophic headlines darken our days. Many of us are tired, heartsick, anxious, and overwhelmed. Some of us are ill. Some of us are mourning loved ones who have died. Some of us are facing economic uncertainty or ruin. Some of us are devastated by the divisions and inequalities that infect our communities. Some of us are angry about what’s happening in our national and global politics. Some of us are barely hanging onto belief in one God. Now the Church wants us to contemplate three? Why?
If you’re like me and been in the church a while, you’ve been at the receiving end (or the giving end) of many well-meaning but inadequate attempts to explain the Triune God: “Oh, well, the Trinity is sort of like water! You know, liquid, vapor, and ice? Three phases, one entity? The Trinity is like that!” Or “Think of a tree! The roots, the trunk, and the branches. Three parts, one tree. Or an egg. The shell, the egg white, and the yolk. Or a triangle. Or St. Patrick’s shamrock: three petals, one clover. Or (courtesy of John Wesley), three candles in a room, one light by which to read.
All of these analogies — beautiful though they are — fall short, and none of them address the deeper question: Why should we care? What difference does the three-in-one make? Fine, God is Father, Son, and Holy Spirit. So what? Given the state our world is in right now, why should the Christian doctrine of the Trinity matter?
Well, maybe for starters, we need the Trinity to teach us a lesson in humility. In this divided and polarised moment, when religion is so often used as a weapon of war, it’s easy to imagine that we have the monopoly on the divine.
It’s easy to grow smug and complacent, and to assume that our articulation of faith, our liturgy, our denomination, and our worship practices capture the best version of who God is and what God desires. One thing the Trinity does by its very complexity is challenge this assumption. The truth of God will always exceed us. The truth of God will always be more than our tiny, easily overwhelmed minds can bear. The truth of God will always confront, convict, and remake us, even as it soothes and affirms us. This is a good thing. It is good and right and necessary to remember that we are created in God’s image. We are not at liberty to reshape God into ours.
So, we begin our celebration of Trinity Sunday with the humble acknowledgement that we are out of our depth. We begin in fear and trembling, rejecting our own arrogance, and recognising that when it comes to comprehending God, we are wholly dependent on divine revelation.
But then what? Why else does the Trinity matter? Perhaps it matters right now because what we believe about the nature of God — in whose image we are created, is a matter of life and death. How can we know who we are, and what we were made for, and who we should be to each other, unless we know who God is? If the desire and delight of God is that we live into the fullness of the Imago Dei, the image of God, then we must commit ourselves to studying and experiencing God’s nature in all of its fullness and complexity.
So, is there anything we can say with assurance, or honour with abandon on this Trinity Sunday? Franciscan priest and theologian Richard Rohr argues that caring about the Trinity requires orienting ourselves in a new way: “Don’t start with the One and try to make it into Three,” he writes in his book,
The Divine Dance. “Start with the Three and see that this is the deepest nature of the One.”
Start with the Three and see that this is the deepest nature of the One. What might it look like to follow Rohr’s advice? What will we discover about God’s character, God’s personality, and God’s priorities, if we see Threeness as the ground and essence of God’s being? Here are a few possibilities:
First, we’ll see that God is dynamic. If God is triune, God does not exist in a monolithic state. Rather, God’s self is fluid. God moves.
Or to use Rohr’s language again: God flows, and God is flow. God dances, and God is dance. The first Greek word I learned at theological college over 30 years ago was Perichoresis. It means the intimate ever-flowing dance of the three to form one. Regardless of whether we’ll learn to tolerate the discomfort of divine fluidity or not, we worship a God who is always on the move, always spilling over, always organic, always a surprise. God’s coherence doesn’t require God to be rigid.
Why does this matter for us? I think it matters because we don’t like change, and we are often reluctant to embrace what is new, what is unfamiliar, what is uncomfortable. But if God’s nature is flow and movement and dance, then we need to find the courage to enter into that same flow, movement, and dance. We must be willing to move.
Next, we’ll see that God is diverse. If God exists in three persons, then each person has their own way of embodying and expressing goodness, beauty, love, and righteousness. As Rohr puts it, the Trinity affirms that there is an intrinsic plurality to goodness. “Goodness isn’t sameness,” he writes, “Goodness, to be goodness, needs contrast and tension, not perfect uniformity.” If God can incarnate goodness through contrast and tension, then it’s worth asking why we can’t. Or won’t. Why do we fear difference so much when difference lies at the very heart of God’s nature?
Given the divisions tearing the world apart at this very moment, I can’t imagine a more relevant characteristic to ponder than God’s innate diversity.
As churches, communities, and countries, we will not survive unless we learn how to live gracefully and peaceably with difference. We will not heal unless we’re honest about our fears, penitent about our histories, and unrelenting in our longing for God’s diverse nature to be realised in its fullness among us.
If God is interactive at God’s very heart — if Three is the deepest nature of the One — then what are we doing when we isolate ourselves from each other? When we decide to go it alone? When we privilege independence and autonomy over companionship and mutuality? When we prioritise our individual “rights” over our care and concern for the most vulnerable among us? If the Trinity really is more than a bit of dusty doctrine the early Church fought over, then we dare not take lightly the life-changing power of the communal. God is Relationship, and it is in relationship — with God, ourselves, each other, and the world — that we experience and embody God’s nature.
We’ll see that God is hospitable. In the 15th century, Russian iconographer Andrei Rublev created “The Hospitality of Abraham,” also known as “The Trinity,” one of the most well-known and beloved icons in Christendom. Many of you might be aware of this famous icon. As an aside, both Janet and I have had the privilege to see this icon in person in Moscow. To see it in person is one of the highlights of my life.
In it, the Father, the Son, and the Holy Spirit (depicted as the three angels who appeared to Abraham near the great trees of Mamre), sit around a table, sharing food and drink. Their faces are nearly identical, but they’re dressed in different colours. The Father wears gold, the Son blue, and the Spirit green. The Father gazes at the Son. The Son gazes back at the Father, but gestures towards the Spirit. The Spirit gazes at the Father, but points toward the Son with one hand, and opens up the circle with the other, making room for others to join the sacred meal. As a whole, the icon exudes adoration and intimacy — clearly, the three persons around the table respect and enjoy each other. But it also exudes openness. There is space at the table for the viewer of the icon. For me. For us.
As if to say, the point of the great Three-in-One is not exclusivity — God is not a high school clique — but rather, radical hospitality. The point of the Three is always to add one more, to extend the invitation, to make the holy table more expansive and more welcoming.
In fact, the deeper the intimacy between the Three grows, the roomier the table becomes. Likewise, the closer we draw to the adoration of the Three, the wider and more hospitable our hearts must grow towards the world.
And finally, we’ll see that God is sacrificial love. The Trinity at its heart is an expression of deep, unfaltering, and life-giving love between the Father, the Son, and the Holy Spirit. The relationship between the persons of the Godhead is not a relationship of domination, power-mongering, manipulation, or jealousy. It is a relationship of unselfish, sacrificial love. Which begs the question: if God’s very being is grounded in love, and we are created in God’s image, then who are we? What are we? Are we, like the Triune God whose imprint we bear, creatures motivated first and foremost by love? Is love what we are known for? If not, then what are we doing with our lives? What does our piety amount to?
Why should we care about the three-in-one? We should care because we are children of the Trinity at a time when the world is reeling and desperate. We are the children of a mysterious, fluid, diverse, communal, hospitable, and loving God who wants to guide us into the whole truth of who God is and who we are. We should care because the mystery of the Trinity has the power to transform our hearts, leading us towards coherence and dynamism, unity and diversity, hospitality and self-giving love. This week and always, may our lives reflect the transformative beauty of the Triune God. The Lord be with you.
















