Expository Sermon On Thanksgiving

Come Into His Courts With Praise: A Sermon on Grateful Worship

Scriptures: Psalm 100; Luke 17:11-19 (Csb)

Opening

There is a particular kind of quiet that falls over a table just before someone says grace. Forks are set down. Heads bow. For just a moment, the noise of the day pauses. Something in us knows that before we eat, we ought to say something. We ought to acknowledge that what sits before us did not arrive by our own cleverness alone.

That instinct is not merely cultural. It is not just a family tradition passed down from grandparents who grew up in harder times. That instinct is something God wired into the human soul. We were made to receive gifts with open hands and to turn those open hands upward toward the Giver.

But here is the honest question worth asking on a day like today: Is our thanksgiving a reflex, or is it a reality? Is it something we perform at certain seasons, or something that has genuinely shaped the way we see God, ourselves, and the world?

The two passages before us this morning press that question with great pastoral urgency. Psalm 100 calls the whole earth to shout, to serve, to come before God with joy and thanksgiving. Luke 17 shows us ten men who received the same miracle and walked away with very different hearts. Together, these texts give us a picture of what genuine, gospel-rooted gratitude looks like and why it matters far more than a single holiday can contain.

Part One: The Call To Come With Thanksgiving (Psalm 100)

Psalm 100 is one of the most familiar psalms in all of Scripture, and familiarity can be a quiet enemy of attention. We have heard these words so often that they can wash over us without landing. So let us slow down and hear them again.

The psalm opens with a command that is almost startling in its scope. "Shout triumphantly to the Lord, all the earth" (Psalm 100:1, CSB). This is not a polite suggestion for those who feel emotionally ready. It is a summons. The whole earth is called to raise its voice in recognition of who God is. The word translated "shout triumphantly" carries the sense of a joyful, even loud, acclamation. This is not the quiet nod of someone who acknowledges a distant acquaintance. This is the response of a people who have seen something wonderful and cannot keep silent.

Verse two deepens the call: "Serve the Lord with gladness; come before him with joyful songs." Notice the pairing here. Service and gladness belong together. Worship and joy belong together. The psalm does not allow us to divide our duty from our delight. We are not called to serve God grudgingly while privately wishing we were somewhere else. We are called to bring our whole selves, including our joy, into the presence of God.

Then comes verse three, which is the theological heart of the psalm: "Acknowledge that the Lord is God. He made us, and we are his, his people, the sheep of his pasture." This is the foundation of all gratitude. Before we can be genuinely thankful, we must know to whom we belong. We are not self-made. We are not the authors of our own existence. We were created by a God who not only made us but claims us as his own. The phrase "we are his" is a declaration of belonging that carries enormous comfort. The sheep of his pasture are not wandering in a wilderness without a shepherd. They are known, tended, and kept.

Verse four then issues the practical invitation: "Enter his gates with thanksgiving and his courts with praise. Give thanks to him and bless his name." This is where the psalm becomes a pattern for worship. Thanksgiving is the posture with which we approach God. We do not come demanding. We do not come bargaining. We come with gratitude already in our hearts, because we already know who he is before we even open our mouths.

And verse five gives us the reason that never expires: "For the Lord is good, and his faithful love endures forever; his faithfulness continues through all generations." The goodness of God is not seasonal. His faithful love, what the Hebrew calls hesed, his covenant steadfastness, does not fluctuate with our circumstances. It endures. It outlasts our grief, our confusion, our failures, and our fears. This is the bedrock beneath every act of thanksgiving.

Part Two: The Difference Between Receiving And Returning (Luke 17:11-19)

If Psalm 100 gives us the theology of thanksgiving, Luke 17 gives us the mirror that shows us how easily we can receive God's mercy and walk away unchanged.

Jesus is traveling toward Jerusalem, moving through the region between Samaria and Galilee. Ten men with leprosy meet him at a distance. They cannot come close. The law required them to keep their distance and announce their condition to anyone who approached. But they cry out with loud voices: "Jesus, Master, have mercy on us!" (Luke 17:13, CSB).

Jesus does not touch them. He does not pronounce them healed on the spot. He simply says, "Go and show yourselves to the priests" (Luke 17:14, CSB). That instruction would have required faith. The priests were the ones who could officially certify a person as clean and restore them to community life. But these men were not yet clean when Jesus gave the instruction. They had to walk in the direction of the priests before the healing came. And the text tells us that "as they were going, they were cleansed" (Luke 17:14, CSB).

All ten were healed. All ten received the same mercy. All ten had their lives restored. But then the story takes a turn that should stop every one of us cold.

One of them, when he saw that he was healed, turned back. He came back to Jesus, praising God with a loud voice. He fell facedown at Jesus' feet and thanked him. And Luke makes a point of noting that this man was a Samaritan. He was the one least expected, by the social and religious standards of the day, to be the model of gratitude.

Jesus asks three questions in response, and they are not rhetorical flourishes. They are genuine pastoral probes. "Were not ten cleansed? Where are the nine? Didn't any of them return to give glory to God except this foreigner?" (Luke 17:17-18, CSB). The nine are not condemned with fire and judgment in the text. They simply disappear. They received the gift and moved on. They went back to their lives, presumably to their families and their routines, without returning to the Giver.

The Samaritan received something more than physical healing. Jesus says to him, "Get up and go. Your faith has saved you" (Luke 17:19, CSB). The word translated "saved" here is the same word used throughout Luke for salvation. The other nine were cleansed. This one was saved. The difference, in the narrative, is the return. The return was the expression of faith. The return was the act of worship. The return was what distinguished a man who received a blessing from a man who encountered the Savior.

Central Claim

Here is what these two passages together are teaching us. Genuine thanksgiving is not simply an emotion we feel when things go well. It is a posture of the heart that knows where every good gift comes from, returns to the Giver in worship, and shapes the way we live. Gratitude, in the biblical sense, is not a feeling we chase. It is a faith we practice.

Part Three: What This Means For Us

The first application is this: We must resist the habit of receiving God's mercy without returning to him. The nine lepers are not villains. They are simply people who moved on. And we do the same thing. We pray for something. God answers. We breathe a sigh of relief and go back to our lives. The season of Thanksgiving is a good time to ask honestly: When did I last return to Jesus simply to say thank you? Not to ask for something. Not to bring a request. Simply to fall at his feet and acknowledge that I am alive and loved and kept by his mercy.

The second application is this: Thanksgiving is not a feeling we manufacture. It is a recognition we cultivate. Psalm 100 does not say "feel thankful." It says "enter his gates with thanksgiving." It is something we do, even when the feelings are slow to follow. We come. We acknowledge. We declare. And often the feelings of gratitude are awakened precisely by the act of returning to God in worship.

The third application is this: The goodness of God is the foundation that makes thanksgiving possible in every season, not just the comfortable ones. The psalmist does not say God is good when the harvest is plentiful. He says God is good, full stop. His faithful love endures forever. That means the family sitting around a table with empty chairs this year can still come before him with thanksgiving, not because the pain is not real, but because the goodness of God is more enduring than any grief. That is not a dismissal of suffering. It is the anchor that holds through it.

Conclusion And Gospel Invitation

The Samaritan who returned to Jesus did not return because his life was perfect. He returned because he had been shown mercy he did not deserve, and he knew it. That is the gospel in miniature. Every person in this room who has trusted in Jesus Christ has been shown mercy beyond measure. Not just cleansed of a physical disease, but forgiven of sin, reconciled to God, and given the hope of eternal life through the death and resurrection of Jesus.

If you have never come to Christ in faith, today is a good day to return to the one who has already been calling out to you. You do not have to clean yourself up first. You come as you are, and you find that he is already extending mercy.

And for those of us who have known his grace for years, let this day be more than a holiday. Let it be a return. Let us come back to the feet of Jesus, not with a request, but with praise. Let us enter his gates with thanksgiving and his courts with praise. Let us give thanks to him and bless his name.

For the Lord is good. His faithful love endures forever. His faithfulness continues through all generations.

Come, let us worship him together.

Sources Consulted

Allen, Leslie C. Psalms 101-150. Word Biblical Commentary. Word Books, 1983.

Craigie, Peter C. Psalms 1-50. Word Biblical Commentary. Word Books, 1983.

Garland, David E. Luke. Zondervan Exegetical Commentary on the New Testament. Zondervan, 2011.

Green, Joel B. The Gospel of Luke. New International Commentary on the New Testament. Eerdmans, 1997.

Longman, Tremper III. Psalms. Tyndale Old Testament Commentaries. InterVarsity Press, 2014.

Stein, Robert H. Luke. New American Commentary. Broadman and Holman, 1992.