Get Behind Me (Matthew 16:21-27)

August 30, 2026, Year A, Proper 17, Fourteenth Sunday after Pentecost, Season after Pentecost

Matthew 16:21-27***, Jeremiah 15:15-21, Psalm 26*

Grace, mercy, and peace from God our Father and the Lord Jesus Christ be with you on this Fourteenth Sunday after Pentecost.

Last Sunday we came to the culmination of Movement III in our journey through Matthew’s Gospel: the King Acts and Is Recognized. For several weeks Matthew had been pressing the question of Jesus’ identity. Jesus fed five thousand people in the wilderness. He walked across the sea toward the disciples in the storm. A Canaanite woman came to him in Gentile territory and addressed him as Lord and Son of David. Finally, at Caesarea Philippi, Jesus put the question directly to the disciples: “But who do you say that I am?” (Matthew 16:15, ESV) Peter answered, “You are the Christ, the Son of the living God.” *(Matthew 16:16, ESV)*Jesus told him that flesh and blood had not revealed this to him, but the Father in heaven. Peter had the answer. The King had been recognized.

Today we begin Movement IV: the Cost of the Kingdom. Last Sunday Peter confessed the identity of the King. This morning Jesus begins to explain what the road of the King will cost, first for himself and then for anyone who follows him.

But last Sunday’s passage ended strangely. After Peter made the confession on which Jesus said he would build his Church, Jesus “strictly charged the disciples to tell no one that he was the Christ.”(Matthew 16:20, ESV) We said last Sunday that the reason becomes clear almost immediately. The disciples know the right title, but they do not yet understand what kind of Christ Jesus is. If they begin proclaiming Messiah before they understand the cross, they will proclaim a Messiah shaped by their expectations rather than by the mission of God. This morning we discover just how necessary that silence was.

Matthew opens verse 21 with three words that mark one of the great turning points in his Gospel: “From that time.” (Matthew 16:21, ESV) We have heard that phrase once before. Near the beginning of Jesus’ public ministry, Matthew wrote, “From that time Jesus began to preach, saying, ‘Repent, for the kingdom of heaven is at hand.’”(Matthew 4:17, ESV) That marked the beginning of his ministry in Galilee. Now Matthew uses the phrase again. The King has been recognized, and from this point forward Jesus begins to teach his disciples where the road of the King is going: “From that time Jesus began to show his disciples that he must go to Jerusalem and suffer many things from the elders and chief priests and scribes, and be killed, and on the third day be raised.” (Matthew 16:21, ESV)

There is an entire Gospel in that sentence. Jerusalem. Suffering. Death. Resurrection. Jesus gives them the whole pattern before any of it happens, and one of the most important words in the sentence is “must.” The Greek word is dei (DAY), expressing necessity. Jesus does not say that he may go to Jerusalem, or that opposition is becoming serious enough that suffering is increasingly likely. He says he must go. There is divine necessity in the road ahead. The cross is not an accident waiting for Jesus at the end of an otherwise successful ministry. It is not what happens when the mission goes wrong. It belongs to the mission itself.

That is the part Peter cannot accept. Verse 22 says, “Peter took him aside and began to rebuke him, saying, ‘Far be it from you, Lord! This shall never happen to you.’” (Matthew 16:22, ESV) There is something almost tender about the scene before we recognize how astonishing it is. Peter loves Jesus. He does not want the man he has followed, the man he has just confessed as the Christ, to suffer and die. He pulls Jesus aside as though saving him from a terrible thought.

But consider what Peter is actually doing. The man who has just confessed Jesus to be “the Christ, the Son of the living God”(Matthew 16:16, ESV) is now taking the Son of the living God aside to tell him that he is wrong about what comes next. Peter accepts Jesus’ identity, but he rejects Jesus’ account of his mission. Peter has the right title and the wrong definition.

His expectations were not foolish. They were simply too small. He knew what God had promised about the Messiah, but he had already decided what fulfillment of those promises must look like. For Peter, Messiah meant victory. Messiah meant the restoration of Israel. Messiah meant the defeat of enemies and the establishment of the Kingdom. Those expectations did not come from nowhere. Israel really was waiting for the promised Davidic King. The prophets really did promise that God would establish his reign. Peter’s error is not that he expects Jesus to conquer. His error is that he cannot imagine that the victory comes through suffering, that the throne is reached through a cross, and that the King conquers by giving himself.

Jeremiah knew something about that. In our appointed Old Testament reading he is a prophet wounded by faithfulness to his calling. He cries, “Know that for your sake I bear reproach.”(Jeremiah 15:15, ESV) God’s words had become “a joy and the delight of my heart,” yet obedience isolated him and brought opposition. (Jeremiah 15:16, ESV) The word was good. The road was costly.

We sometimes carry an unspoken bargain into obedience: if I follow faithfully, surely the road will make sense. Jeremiah obeyed and bore reproach. Peter confessed Christ and then discovered that the Messiah was walking toward a cross. Faithfulness does not obligate God to fulfill the expectations we attach to it.

The irony in Peter’s case is that Jesus tells him the whole story. He does not say only that he will suffer and be killed. He says that “on the third day” he will “be raised.” (Matthew 16:21, ESV) Peter seems not to hear it. The suffering is so offensive to his expectations that he cannot hear the resurrection on the other side of it.

Jesus’ response is among the sharpest things he ever says to a disciple: “Get behind me, Satan!” (Matthew 16:23, ESV) Only a few verses ago Peter was blessed because the Father had revealed the confession. Now Jesus says, “You are not setting your mind on the things of God, but on the things of man.” *(Matthew 16:23, ESV)*Peter has moved from receiving God’s revelation to resisting God’s purpose.

We have heard the substance of Peter’s proposal before. In the wilderness Satan offered Jesus “all the kingdoms of the world and their glory” apart from the Father’s appointed road. (Matthew 4:8–9, ESV) Peter now offers the same temptation through the voice of a friend: surely there is another road to the Kingdom, a crown without the cross. Jesus recognizes the temptation even when Peter does not.

And then notice exactly what he says: “Get behind me.” (Matthew 16:23, ESV) Peter belongs behind Jesus. That is part of the mercy hidden inside the rebuke. Jesus does not merely tell Peter to go away. He tells him where to go: behind me. Satan is dismissed in the wilderness; Peter is commanded to return to the place of a disciple. His problem is that he has moved from following Jesus to trying to lead Jesus. He has stepped out from behind Christ, placed himself in the road, and begun telling the Lord which direction he may take.

Jesus continues, “You are a hindrance to me.” *(Matthew 16:23, ESV)*The Greek word is skandalon (SKAN-da-lon), a stumbling block, something placed in the path that causes another to stumble. The contrast with last Sunday could hardly be sharper. Jesus had just named Simon Peter, Petros (PEH-tros), in connection with the petra(PEH-tra), the rock upon which he would build his Church. Now Peter has become a skandalon (SKAN-da-lon), a stumbling block in the road. When Peter receives what the Father reveals, he confesses rightly. When he substitutes human expectations for the purpose of God, he gets in the way.

Then Jesus turns from Peter to all the disciples, and what began as a correction of one man becomes the definition of Christian discipleship: “If anyone would come after me, let him deny himself and take up his cross and follow me.” (Matthew 16:24, ESV) Notice the movement. To Peter: “Get behind me.” (Matthew 16:23, ESV) To everyone: “come after me.” (Matthew 16:24, ESV) Those are two ways of describing the same place. The disciple belongs behind Jesus.

To deny ourselves does not mean self-hatred. It means relinquishing the claim that we belong ultimately to ourselves. Our desires, ambitions, comfort, reputation, fears, and expectations do not have the final word. Christ does.

Then Jesus adds the words that would have landed with particular force on his first hearers: “take up his cross.” *(Matthew 16:24, ESV)*We have lived with the cross as a Christian symbol for so long that it is difficult to hear the phrase as the disciples first heard it. We speak of some persistent difficulty as “our cross to bear.” But to a first-century hearer, a man carrying a cross was not a man enduring an inconvenience. He was a condemned man walking toward death.

That does not mean every hardship is a cross. The cross in this passage is specifically connected to following Jesus. It is what faithfulness may cost because we belong to him.

Jeremiah gives us the same pattern. God tells him, “They shall turn to you, but you shall not turn to them.” (Jeremiah 15:19, ESV) The direction matters. Jeremiah must not let resistance determine the direction of his faithfulness. Peter is trying to turn Jesus from the Father’s road. Jesus refuses, then tells Peter to get behind him and walk the same direction.

Jesus gives the reason in verse 25: “For whoever would save his life will lose it, but whoever loses his life for my sake will find it.”(Matthew 16:25, ESV) Peter is trying to save Jesus’ life. Jesus tells him that the Kingdom cannot be entered by the logic of self-preservation, and then he applies that same logic to every disciple. The life built around saving itself will finally be lost. The life entrusted to Christ will be found.

Jesus is not opposed to life. He is opposed to the attempt to secure life apart from him. The one commanding us to lose our lives promises that in losing them for his sake we will find them. Our suffering does not save us. His cross saves; ours follows.

Then comes Jesus’ question: “For what will it profit a man if he gains the whole world and forfeits his soul?” *(Matthew 16:26, ESV)*Suppose every strategy of self-preservation succeeds: reputation, money, health, influence, security. What have we gained if the price is our soul?

There is no exchange rate for the soul. We cannot accumulate enough of something lesser to compensate for losing the thing of greater value. “What shall a man give in return for his soul?”(Matthew 16:26, ESV) Nothing. Not even the whole world is enough.

Psalm 26 gives us another way to hear that question. David prays, “I have walked in my integrity, and I have trusted in the LORD without wavering.” (Psalm 26:1, ESV) Later: “I love the habitation of your house and the place where your glory dwells.” *(Psalm 26:8, ESV)*The psalm describes a life ordered around God’s presence rather than the world’s approval. Jesus presses the same question to its end: what good is gaining everything if we lose life before God?

Peter’s error moves very close to us whenever Christ leads in a direction we have already decided is unacceptable. We confess him as Lord, then quietly reserve certain areas in which his lordship will not be permitted to interfere. We want Jesus as Savior while retaining authority to define the terms of discipleship.

Sometimes the hardest part of following Christ is obeying when we believe we have been faithful and the road still does not look like the one we expected. Our expectations of what obedience ought to produce may have to die as well. Faithfulness does not put God in our debt.

So what does this passage ask of us? Three things.

First: stay behind Jesus. Peter’s mistake was not that he loved Jesus too much. His mistake was that his love became an excuse to tell Jesus where he should go. We can do the same with sincere motives. We can become so convinced that our judgment, our instincts, our plans, or our expectations are obviously correct that we assume Christ must endorse them. The question is not whether Jesus is following the direction we think best. The question is whether we are still behind him. The safest place for Peter was behind Jesus. It is the safest place for us.

Second: allow the cross to expose what we are trying hardest to save. Jesus’ question about gaining the world forces us to ask what we would be unwilling to lose in order to remain faithful to him. For one of us it may be reputation. For another, comfort. For another, control, money, approval, a relationship, or the right to hold onto a grievance. None of those things needs to look dramatic from the outside. The question is whether there is anything we have placed beyond the reach of the words, “deny himself and take up his cross and follow me.” (Matthew 16:24, ESV)

Third: do not confuse a costly road with an abandoned one. Jeremiah bore reproach precisely because he belonged to God. Psalm 26 gives us the prayer of someone who can still say, “My foot stands on level ground.” (Psalm 26:12, ESV) The ground beneath the disciple is not predictable circumstances. It is the faithfulness of the God we follow.

The collect we prayed this morning asks that God’s grace may “always precede and follow after us.” That is almost the prayer of this passage. Grace goes before us because Christ is already on the road ahead. Grace follows after us because we could never remain behind him by our own strength. Christian discipleship begins, continues, and ends with God’s grace. Our task is not to find the road ourselves, but to follow the Christ who has already gone before us.

Peter will learn this slowly. He will misunderstand again, draw a sword in Gethsemane, and later deny that he knows Jesus. Yet the man who said, “This shall never happen to you” (Matthew 16:22, ESV) will eventually write that “Christ also suffered once for sins, the righteous for the unrighteous, that he might bring us to God.” (1 Peter 3:18, ESV) Peter eventually learns that Christ’s suffering is not the failure of God’s saving purpose. It is its accomplishment.

And finally, do not miss the part Peter missed. Jesus does not say only that he will suffer and die. He says that “on the third day” he will “be raised.” (Matthew 16:21, ESV) Nor does this passage end with the disciple losing his life. Jesus says, “The Son of Man is going to come with his angels in the glory of his Father.” (Matthew 16:27, ESV)

The road is cross-shaped, but the destination is glory. The suffering Christ is the risen Christ. The rejected Christ is the returning King. Peter sees the cross and thinks the Kingdom has failed. Jesus knows the cross is the road by which the Kingdom comes.

That is why the Christian can take up the cross without despair. We are not surrendering our lives to death. We are entrusting them to the one who defeated it and has already told us where the road ends.

Last Sunday Peter confessed who Jesus is. This Sunday Jesus teaches Peter what that confession means. “You are the Christ, the Son of the living God.” (Matthew 16:16, ESV) Yes. And this Christ goes to Jerusalem, suffers, is killed, and on the third day is raised. The confession needs the cross to give it its proper shape. So does the disciple.

So Jesus says to Peter, and through Peter to us: “Get behind me.”(Matthew 16:23, ESV) Return to the place of the disciple. Let Christ set the direction. Take up the cross that faithfulness requires and follow the King who went to Jerusalem for us, who suffered for us, who died for us, who rose for us, and who will come again in glory.

The safest place for Peter was behind Jesus. It is still the safest place for us.

In the Name of the Father, and of the Son, and of the Holy Spirit. Amen.