Faith That Gives Thanks

 Proper 23, Year C | Luke 17:11-19

Grace to you and peace from God our Father and the Lord Jesus Christ. Amen.

At a distance. That’s where the our Gospel reading from Luke 17 begins. Ten men, alive but not really living. Leprosy was a death sentence in slow motion. It ate away at your body.  Ten walking dead, their flesh wasting away and their lives already half gone. Leprosy had eaten their bodies and erased their hope. Yet, into their hopelessness walks Jesus. These ten lepers, knowing they were beyond help, did the only thing they could: they lifted their voices and cried out, “Jesus, Master, have mercy on us!” Ten forgotten men, who have nothing left but a cry for mercy.

Ten out of ten were healed. Ten received mercy. But only one came back. Why? Often this story is used to talk about being thankful. Be like the Samaritan, we’re told. Don’t forget to say thank you. But that turns this text into a moral lesson — a bit of religious advice about politeness and gratitude. And moralism always reduces God’s Word to something you should do. The focus is always on your performance. And when we read this story that way, we miss its heart. Thankfulness is certainly part of the story, but Luke’s point is deeper — and far more glorious. Why did only one return? That’s the question we’re going to answer today.

I. Faith begins by seeing the Need for Christ (vv. 11–13)

If we’re going to understand why only one returned, we need to start where faith starts. Faith begins when you see your need and cry out to the only One who can meet it.

Look now at Luke 17:11–13:

“While He was on the way to Jerusalem, He was passing between Samaria and Galilee. As He entered a village, ten men with leprosy who stood at a distance met Him; and they raised their voices, saying, ‘Jesus, Master, have mercy on us!’” (NASB)

Jesus is on the way to Jerusalem — the road that ends in a cross and an empty tomb. And on the way, He meets ten lepers in a village. Luke says, “they stood at a distance.” Of course they did. Leprosy was more than a disease. It also stripped you of everything else. You were banished from your home. Your family couldn’t touch you. You were not welcome in worship. You lived outside the camp — on the margins, cut off, forgotten. And when anyone came near, the law demanded you cry out, “Unclean! Unclean!”

And yet, these ten do something extraordinary. They lift their voices and cry out, “Jesus, Master, have mercy on us!” That cry is where faith must start. They know their need. They believe Jesus can help. They have obviously heard the reports of his miracles. They are desperate for him to help. And so they cry out to Him. Faith begins when it sees its need and turns to Jesus in hope of mercy.

Do you see yourself in them? Because you should. Leprosy is a picture of what sin does to the soul. It doesn’t just leave you with a blemish — it corrupts everything. It eats away at your heart and isolates you from God and from one another. It is a terminal condition. And left to yourself, you are powerless to change it.

And yet, how often do you refuse to see it? How often do you minimize your sin — “I’m not that bad”? How often do you rationalize it — “Everyone does this”? How often do you shift the blame — “I was born this way,” “That’s just my personality,” And it keeps you at a distance. You remain exiled from the God who made you until you admit how desperately you need Him— until you cry out, “Jesus, Master, have mercy on me!”.

Faith begins when you recognize your massive need. Faith begins when you stop trying to clean yourself up and instead turn toward the only One who can make you whole. Faith begins with the cry for mercy. The Son of God stops for people like that. 

II. Faith Takes Christ at His Word (vv. 14-16)

Faith begins by seeing the need for Christ, but Luke says that Faith also takes Christ at his Word. Notice verse 14:

“When He saw them, He said to them, ‘Go and show yourselves to the priests.’ And as they were going, they were cleansed.” (Luke 17:14, NASB)

Jesus doesn’t move toward them. He doesn’t touch them. He doesn’t even say, “You are healed.” Instead, He gives them a command: “Go and show yourselves to the priests.”

That’s a strange thing to say to a group of still-leprous men. Leviticus 14 required anyone healed of leprosy to present themselves to the priest, who would verify the cleansing and offer sacrifice to atone for sin. But these men are not healed — not yet. Their bodies are still diseased. They still stand at a distance.

And yet, they go. Why? Because the word of Jesus carried a promise. It suddenly occurs to them that the command of Jesus was actually a promise — that their leprosy would disappear and that the priests would lift the quarantine and declare them clean. Based solely on that promise, they act on His word before they see any result. They walk toward Jerusalem trusting that something will change because Jesus said so.

And as they go, what happened? “As they were going, they were cleansed.” Not before. Not until they move. But as they walk, trusting in Jesus’ word and promise, the sores fade, the skin clears, the disease is gone. The word of Christ does what it says. That’s what faith does: it clings to Jesus’ word.

Faith takes Jesus at His word even when the sores are still there. It trusts that His promise will hold even when your circumstances have not yet caught up. It believes that when Christ speaks, reality must obey. The same word that healed their flesh still heals today. The word that cleansed them of their leprosy is the word that cleanses you of your sin. His absolution is not a wish or a suggestion. It is a divine act. When Christ declares, “Your sins are forgiven,” they are. When He says, “This is My body, given for you,” it is. When He promises, “I am with you always,” He is. The promise is in the word itself — and Jesus always keeps His promises. These lepers discovered that on the road to the priests. And you will discover it every time you cling to Christ’s word.

III. Faith Recognizes Christ as Savior (vv. 15–19)

Faith begins by seeing the need for Christ. Faith also takes Christ at his Word. But Luke gives us more. Faith gives thanks because it recognizes Christ as Savior. 

“Now one of them, when he saw that he had been healed, turned back, glorifying God with a loud voice, and he fell on his face at His feet, giving thanks to Him. And he was a Samaritan.’” (Luke 17:15–16, NASB)

Ten out of ten were healed. One out of ten turns back. One man, when he sees the healing in his flesh, stops walking toward the priests and starts running back to Jesus. Jesus looks around. “But Jesus responded and said, ‘Were there not ten cleansed? But the nine—where are they? Was no one found who returned to give glory to God, except this foreigner?” (vv. 17-18). Ten were healed. Ten received mercy. But only one came back. Why? What makes this man different? The difference is this: the nine received physical healing and walked away satisfied.  It is possible to receive God’s gifts and still reject God Himself. Like the nine lepers, many seek relief from suffering, healing from pain, or solutions to earthly problems — but do not seek the Savior Himself.

But the Samaritan was healed too, yet he realized it pointed to something far greater. He sees that God has come near in Jesus. He understands that the place to give thanks is not in the temple but at the feet of the One who healed him. He returned “glorifying God with a loud voice.” He falls on his face at Jesus’ feet and “gives thanks to Him.”

He isn’t just saying “Hey, thanks a bunch!” He is not just being polite. Gratitude is theology. It is a confession of faith. This man’s thanksgiving is more than courtesy — it is worship. It is a declaration of who Jesus is. Notice how Luke says he glorifies God — and then immediately says he gives thanks to Jesus. That’s not a contradiction. It’s a revelation. The Samaritan has seen that the presence of God is not somewhere in the distance, waiting behind a temple curtain. The presence of God is standing in front of him, speaking with a human voice. And so he does the only fitting thing: he falls down at His feet. And that is why Jesus says to this man, “Stand up and go; your faith has saved you”(v. 19). Not just healed you. Saved you. Ten were healed, but only one was saved — because only one recognized who was standing before him. Only one returned to give thanks and worship. Only one confessed, with gratitude, the true identity of Jesus — the Messiah, the Son of God.

Miracles in Scripture are never bare displays of power. They reveal the identity of the One performing them. Only God can cleanse the incurable. Only God can restore what is lost. Only God can call the dead to life. 

That’s what Jesus has done for you, my friends. And that’s why this road leads to Jerusalem. Your sins had cast you out. Jesus has brought you home.  Jesus was on His way not simply to cleanse skin, but to heal sin. Not simply to send lepers to priests, but to be the great High Priest who offers the perfect sacrifice. His shed blood is the medicine that makes you whole. His body is the true Temple — the very presence of God among us — torn down and raised up in three days. The sacrifice Jesus offered was complete, perfect, and all-sufficient. His holy blood cleanses you from sin. He clothes you in His righteousness. His resurrection breaks death’s power and gives you the promise of life forever.

And you are already living in that promise. In Baptism, you were washed clean. Not just outwardly, but body and soul. You were joined to His death and resurrection. The cure has been applied. Even if you still carry the symptoms of sin in your flesh — weakness, sickness, decay. But the Tomb is empty. Your body will be raised imperishable. Whole. Perfect. Glorious. Fit for eternal life with God.

That is why we return to His feet. That is why we give thanks. Because thanksgiving is more than courtesy — it is faith’s confession that Jesus Christ is Lord and Savior. It is bowing down before the One who heals, saves, and reigns. It is proclaiming that the Lord of the cross and the empty tomb is worthy of all honor and glory.

Ten out of ten me were healed, but only one was saved — the one who gave thanks, because his thanksgiving confessed who Jesus is. And now, is that your confession too? You have been cleansed. You have been forgiven. You have been joined to the life of the risen Lord. So fall at His feet. Give thanks. Worship Him. Confess with your lips and with your life: Jesus Christ is your Lord and your Savior — now and forever.”

May the peace of God, which surpasses all understanding, guard your hearts and your minds in Christ Jesus. Amen.