Main Idea: God is within us through the Holy Spirit, whom Jesus promised as “rivers of living water” that flow from the hearts of those who believe in him. This promise, made before Jesus’ death and resurrection, was fulfilled at Pentecost when the Spirit was poured out, making God’s own life present and active inside ordinary believers.

The sermon weaves together:

The repeated refrain “God is within us” is the central theme.

Purpose: To celebrate Pentecost by inviting people (both inside and outside the church) to:

  1. Come to Jesus in their spiritual thirst—no perfect faith required, just honest need and trust.
  2. Receive the Holy Spirit as living water that satisfies and then overflows from their lives.
  3. Live out the Christian story as Spirit-filled participants in God’s mission—loving neighbors, serving others, and sharing the good news.

It is both teaching (explaining the connection between Jesus’ promise, the Ascension, Pentecost, and Trinity Sunday) and evangelistic/pastoral (warmly welcoming the thirsty, the doubting, the wounded, and reminding believers of the empowering presence of God already inside them). The sermon aims to move listeners from awareness of inner longing to joyful participation in the overflowing life of the triune God.

In short, it’s a Pentecost call to drink deeply so that God’s life can flow out through us into the world.

 

 

INTRODUCTION (≈ 4 minutes)

[Stand center stage, warm smile, open posture. Make eye contact across the room. Speak with quiet energy and expectancy.]

Good morning, church!

Today we celebrate Pentecost — one of the greatest feasts on the Christian calendar. When most of us hear the word “feast,” we picture a big meal. But on the church calendar, a feast is a day set apart to remember something God has done that we must never forget. Christmas remembers the birth of Jesus. Easter remembers the resurrection. And Pentecost remembers the day God poured out His own life — the Holy Spirit — into ordinary people like you and me.

[Pause 2 seconds – let it land.]

Our Scripture this morning is from the lips of Jesus Himself, spoken months before Pentecost ever happened. Would you stand with me as we hear the Word of the Lord?

[Read slowly and clearly, with reverence] “On the last day of the festival, the great day, while Jesus was standing there, he cried out, ‘Let anyone who is thirsty come to me, and let the one who believes in me drink. As the scripture has said, “Out of the believer’s heart shall flow rivers of living water.”’ Now he said this about the Spirit, which believers in him were to receive, for as yet there was no Spirit because Jesus was not yet glorified.” — John 7:37–39 NRSVUE

[Close Bible, look up, step forward slightly. Voice rises with excitement.]

Friends, the main idea of this sermon is simple, yet life-changing: God is within us. Not far away. Not someday. Right now — through the Holy Spirit — the living God has taken up residence inside every person who trusts in Jesus. And that changes everything.

[Smile, brief pause.] Let’s walk through the story together and discover what this means for us today.

BODY (≈ 15 minutes)

Point 1: The Thirst We All Carry (≈ 3 minutes)

[Gesture outward to the congregation – “you” language.]

Jesus didn’t whisper this promise to a small Bible study. He stood up in the middle of a massive, noisy festival in Jerusalem and cried out. Thousands of people — pilgrims, merchants, families — filled the city. Songs, prayers, sacrifices everywhere. And right into that joyful chaos Jesus shouts:

“Let anyone who is thirsty come to me!”

[Pause. Soften voice.] He’s not talking about physical thirst. He’s talking about the deeper thirst of the human heart — the thirst for purpose, forgiveness, love, belonging, and hope that life is more than what we can see.

We all know this thirst. Some of us chase success to satisfy it. Some turn to pleasure. Some cling to control. But the thirst always returns.

[Gentle, compassionate tone] Here’s the good news: longing isn’t wrong. When we look at a broken world and ache for something better, our hearts are awake. And into that ache Jesus says, “Come to me.”

Transition: But to feel the full power of His invitation, we need to understand where He said it.

Point 2: The Festival and the Promise of Water (≈ 2.5 minutes)

[Lean in, paint the picture.]

Jesus spoke on the last day of the Feast of Tabernacles — the great climax of a week-long celebration. This festival remembered Israel’s wilderness journey when God miraculously provided water from a rock. Every day the priests carried water from a special pool in a joyful procession, poured it out at the altar, and the people sang:

“With joy you will draw water from the wells of salvation.” (Isaiah 12:3)

On the final day — the “great day” — Jesus stands up and says, “The water you’ve been praying for… the life the prophets promised… it is found in me.”

[Pause for effect.] He wasn’t pointing to a future ritual. He was saying, “I am the source.”

Transition: So who is this man who claims to be the source of life itself?

Point 3: The Incarnation — God Comes Near (≈ 2.5 minutes)

[Voice filled with wonder.]

Jesus is not just a good teacher pointing us toward God. He is God come to us. This is the miracle of the Incarnation — God the Son taking on human flesh.

The One who created the oceans knows what it feels like to be thirsty. The One who formed humanity became human. He did not remain distant from our suffering; He entered it.

[Softly, personally] That means when Jesus says “Come to me,” He’s not shouting from heaven. He’s speaking as One who has walked dusty roads, felt exhaustion, and carried our pain. He has already come to us — so now we can come to Him.

Transition: And what does He offer when we come?

Point 4: The Promise of Living Water (≈ 3 minutes)

[Build energy here.]

Jesus continues: “Let the one who believes in me drink. As the Scripture has said, ‘Out of his heart will flow rivers of living water.’”

John tells us plainly: Jesus was talking about the Holy Spirit.

God’s own life will take up residence in human hearts. God is within us.

This is astonishing. Once we drink, we don’t just get a sip — rivers begin to flow out of us. The same Spirit that hovered over the waters at creation, the same Spirit that raised Jesus from the dead, now lives in ordinary believers.

[Illustrative pause – warm smile] Think of it like this: You don’t have to be perfect to drink. Belief is simply trust — like getting on a roller coaster even when your knees are shaking because you trust the ride is safe. Jesus welcomes the thirsty, the doubting, the wounded, the scared. No one is turned away.

Transition: But John adds one important detail that brings us to the heart of Pentecost.

Point 5: Why the Spirit Had Not Yet Come (≈ 2 minutes)

[Serious but hopeful tone.]

John writes: “For as yet there was no Spirit, because Jesus was not yet glorified.”

The gift of the Spirit depends on the finished work of Jesus. He had to go to the cross, rise from the dead, and ascend to the Father. Only then could the Father and the Son send the Spirit in fullness.

That brings us to the next chapter in God’s story.

Point 6: Pentecost — The Promise Fulfilled (≈ 2 minutes)

[Voice rises with joy. Gesture upward.]

Fifty days after the resurrection, the disciples were praying in Jerusalem when suddenly the Holy Spirit came — wind rushing through the house, tongues of fire, people speaking good news in every language under heaven.

The dramatic signs were real, but the deeper reality was this: God is within us. The life of the triune God — Father, Son, and Holy Spirit — overflowing into the world.

APPLICATION (≈ 5 minutes)

[Step closer to the front row if possible. Slower, pastoral, invitational tone. Make it personal.]

So what does this mean for us this morning — right here in Pasadena in 2026?

  1. Come thirsty. Jesus does not say, “Fix yourself first.” He says, “Come to me and drink.” Bring your doubts, your wounds, your questions. He welcomes you exactly as you are.
  2. Drink deeply. The Holy Spirit is not a distant force. He is God within you — comforting you in sorrow, reminding you of Jesus’ words, giving you wisdom, helping you pray when you don’t know what to say, and empowering you with gifts to serve others.
  3. Let rivers flow. You are not meant to be a stagnant puddle. The Spirit turns you into a source of life for a dry and thirsty world. Your workplace, your neighborhood, your family — they need the living water that flows from a Spirit-filled life.

[Illustrative story – deliver warmly, 45–60 seconds] I remember a young woman in our church a few years ago who felt completely empty after a painful divorce. She came to a Pentecost service just like this one, exhausted and skeptical. She prayed a simple, shaky prayer: “Jesus, I’m thirsty. If You’re real, fill me.” The change wasn’t overnight, but month by month the Spirit began to heal her heart, restore her joy, and give her courage to share her story with other hurting women. Today she leads a small group where rivers of living water are literally flowing out of her life. That can be your story too.

CONCLUSION (≈ 3 minutes)

[Slow down. Voice full of conviction and tenderness. Look around the room slowly.]

Friends, the Christian calendar walks us through God’s story every year so we never forget who God is and what He has done.

God is within us.

[Pause 3 full seconds. Let the silence speak.]

So hear the voice of Jesus calling across the centuries and into this room today: “Come, all who are thirsty. Come and drink. And watch as rivers of living water begin to flow from your life into a world that desperately needs hope.”

[Raise hands slightly in blessing.] May the Spirit of God fill you so fully this Pentecost that you leave here knowing — deep in your bones — that the living God is within you. And may those rivers flow out of you all week long.

In the name of the Father, the Son, and the Holy Spirit — the God who is within us.

Amen.

[Pause. Smile. Softly] Let’s stand and sing our response to the God who has come to live inside us.

Delivery Notes for the Preacher: