05/18/2026
What Really Makes Us One
A sermon preached by the Rev. J. Thomas Buchanan on May 17, 2026
Covenant Presbyterian Church
“I ask not only on behalf of these [my disciples], but also on behalf of those who will believe in me through their word, that they may all be one. As you, Father, are in me and I am in you, may they also be in us, so that the world may believe that you have sent me. The glory that you have given me I have given them, so that they may be one, as we are one, I in them and you in me, that they may become completely one, so that the world may know that you have sent me and have loved them even as you have loved me. Father, I desire that those also, whom you have given me, may be with me where I am, to see my glory, which you have given me because you loved me before the foundation of the world. Righteous Father, the world does not know you, but I know you; and these know that you have sent me. I made your name known to them, and I will make it known, so that the love with which you have loved me may be in them, and I in them.” (John 17:20-26, NRSV)
Did you hear about the man they discovered all by himself on a desert island a while back?
Apparently, he had been living there successfully for years. No one else was there. Just this one solitary man, sand and sea and palm trees all around. But when they found him, they discovered three buildings standing behind him.
So, they asked, “What’s this building?”
“Why,” he said, “that’s my home. That’s where I live.”
“And what’s this second structure?”
“Well,” the man replied, “that’s my church. That’s where I go to church.”
“Wonderful,” they said. “And what’s this third building?”
The man replied, “Oh, that’s where I used to go to church.”
It’s funny because it’s ridiculous. And it’s funny because it’s true. It’s all too easy for us human beings to find ways to divide ourselves from each other.
We are in fact truly gifted at it. We draw lines through nations and neighborhoods, through families and friendships, through denominations and dinner tables. We sort the world into the reasonable and the absurd, the enlightened and the backward, the trustworthy and the suspect. We do it with doctrine, politics, taste, memory, grief, and fear. And religion, which should open us to mystery and mercy, has too often only widened the divides.
So, when Jesus prays, “that they may all be one,” we should not hear something sweet and sentimental. We should hear something almost … impossible.
John lets us overhear this prayer on the night before Jesus goes to his death. The hour is late. The meal has been shared, and the feet have been washed. Judas has gone out into the darkness. The machinery of betrayal is beginning to move — fear grinding its gears, power tightening its fist, violence preparing to call itself necessity. Before long, there will be torches in the garden, a kiss of betrayal, a courtyard fire, a governor’s question, soldiers’ mockery, nails, wood, and the long shadow of a cross.
And in that hour, Jesus prays. He prays for his friends who will fail him before morning. He prays for the ones who will scatter, deny, hide, and grieve. And then his prayer widens. “I ask not only on behalf of these,” he says, “but also on behalf of those who will believe in me through their word.”
That means us. Think of it: Before we ever thought to pray to Christ, Christ prayed for us. Before our names were ever spoken, before our stories ever began to unfold, before this congregation or any church like it, we were already being held inside the prayer of Jesus.
And what does he ask? “That they may all be one.”
Not that they may be impressive, or large, or admired by their neighbors. Not that they may be envied by other institutions, well-funded, perfectly organized, strategically branded, or even seizing the levers of power. Jesus doesn’t seem terribly interested, in this moment, in any of these things, in any of the things that churches so often panic over. He prays that they may be one.
But we should be careful with that word — oneness, unity — because the church has learned how to make even holy words serve anxious purposes. Unity can become the velvet cloth we draw over conflict, so no one has to look too closely at the wound. It can become the language of the comfortable, a way of saying to the hurting, “Please keep your pain at a manageable volume.” It can become the quiet agreement that truth will stay outside in the rain while everyone inside congratulates themselves for getting along. The church has called that peace and unity before. Jesus does not.
Jesus is not praying for some smooth surface of niceness. He is praying for communion. “As you, Father, are in me and I am in you, may they also be in us.” He certainly doesn’t ground our unity in our capacity to agree, because surely, he knows better than that! He grounds our unity in the very life of God. He reaches into the deep, eternal, unbroken love between the Father and the Son and draws us there.
Let them live in us. Let them be caught up into our life. Let the love that has always been at the heart of all things become visible in them.
This means that the church’s unity is not something we manufacture by effort, management, or good behavior. It is something we receive, something we inhabit, something we practice until it begins to show.
The word Jesus uses for this essential truth is glory. “The glory that you have given me I have given them,” he says, “so that they may be one, as we are one.”
Now, glory, as we usually hear it, sounds like gold and thunder. It sounds like trumpets, crowns, marble halls, light spilling down from heaven. It sounds like victory with banners unfurled. But in John’s Gospel, glory walks a far stranger path. Glory gets down on its knees with a towel and basin. Glory feeds the hungry. Glory touches the untouchable. Glory stands before Pontius Pilate with no army behind him. Glory is lifted up on a cross, to pour itself out for the world.
The Romans look at the cross and sees a condemned man. The Jewish authorities see a problem disposed of. The crowd sees one more body crushed beneath the machinery of empire. The disciples see the death of their hopes. But John looks at the cross and says: Behold, the glory of God.
There it is, there the glory is — not in domination, but in self-giving. Not in spectacle, but in mercy. Not in the power to crush, but in the love that refuses to stop loving even when betrayed, abandoned, mocked, and pierced. The glory of God is love poured out all the way down.
And Jesus says he has given that glory to us. Which is to say, what makes us one is not that we have found the right formula for getting along. What makes us one is that the crucified and risen Christ has placed his own life among us. He has given us the love that bends low with a basin. The love that tells the truth without cruelty. The love that forgives without pretending. The love that rises with wounds still visible and speaks peace into the locked rooms of frightened people.
That’s why this prayer belongs so beautifully here, in this season, near the end of Easter. For weeks now, we have been living in the afterglow of the empty tomb. We have heard again that death did its worst and still lost its grip. We have watched the risen Christ come through locked doors, meet Thomas in his wounded doubt, call Mary by name in the garden, feed his friends beside the sea. Easter is not just a single day on the calendar. It’s the slow dawning of a new world. It is resurrection working its way into the bloodstream of the church.
And next week comes Pentecost. Next week, the Spirit will rush like wind and flame. Next week, people from every direction will hear the good news in their own languages. And the miracle will not be that everyone becomes the same. The miracle will be that difference becomes a vessel for communion. Many voices, one gospel. Many bodies, one Spirit. Many stories, one love.
But before Pentecost gives the church its voice, our passage this morning gives the church its heart. And its heart is love. “I made your name known to them,” Jesus prays, “and I will make it known, so that the love with which you have loved me may be in them, and I in them.”
The love with which you have loved me may be in them, and I in them.
That phrase should stop us in our tracks. Jesus doesn’t ask that we might become a little more patient, though God knows that would help. He doesn’t ask that we might become slightly kinder, slightly calmer, slightly more bearable at meetings, though I’m sure that would help! He asks that the love with which the Father loves the Son — the love before the foundation of the world, the love pulsing at the center of creation, the love stronger than death — might be in us. The church exists because that love is looking for a dwelling place in the world.
And the world is hungry for such a dwelling place. We live in an age when division is not only a wound; it’s an industry. Outrage is cultivated. Suspicion is monetized. Contempt is poured into the bloodstream of public life until it feels almost natural. Day after day, we are taught to see other people first as categories, threats, problems, enemies, strangers.
But into that world, Jesus sends a people gathered by another love. And this is where his prayer becomes wonderfully concrete. The love he places in us does not remain an idea hovering safely over our heads. It takes up residence in actual bodies, actual calendars, actual budgets, actual hands. It becomes soup carried to a doorstep, a grocery bag packed for a hungry neighbor, a note written to someone who thought they had been forgotten. It becomes the courage to march, the patience to listen, the grace to forgive, the steadiness to stay in the room when staying is hard.
These things don’t create our unity. Christ does that. But they do make our unity visible. They let the world see, however briefly and imperfectly, the love that has made its home among us.
So, what really makes us one? Not that we all think alike, because we really can’t. Not that we all come from the same place, because we don’t. Not that we have no real disagreements, no old wounds, no hard conversations ahead of us, because we do.
What makes us one is that Christ has prayed us into his own life. Christ has given us his glory, which is love poured out. Christ has placed within us the love with which the Father has loved him from before the foundation of the world. And even now, by the Spirit, Christ is making that love visible in our midst — in mercy, in justice, in welcome, in courage, in forgiveness, in bread shared and burdens carried.
That is our unity, and that is our witness. That is our Easter life, waiting for the breath of Pentecost.
And by the grace of God, it is enough. To the glory of God! Amen.
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