09/06/2026
Here is the message for Sunday, September 6. God bless!
Galatians 2:11-16
Grace, mercy, and peace to you from God our Father and from the Lord Jesus Christ. Amen.
Our sermon reading for today is from Galatians 2:11-16. Since we read this earlier, I am just going to read verse 14 for us to focus on in our sermon. We read. This is God’s Word.
When danger strikes, such as a house fire, violence in the streets, or a violent storm, most people instinctively run away from it to go to a safe place. However, first responders, such as firefighters, police officers, and paramedics do the exact opposite. They run towards the danger that everyone else is fleeing from. They put their lives on the line by entering burning buildings, going near the violence in the streets, and standing out in a violent storm to protect others. Just think about all the first responders who served and lost their lives on 9/11 25 years ago.
Today we will learn how our Savior Jesus calls us Christians to be spiritual first responders when we see a fellow Christian caught in a sin. We’ll learn how by first turning to our sermon series entitled, “Unexpected Truths.” In this sermon series we are learning when we put our human reason and personally feelings aside and look at what the Bible, which is God’s Word, says about Who God really is and what He is really like, it reveals truths that are truly unexpected because they are far better than anyone could have ever reasoned or even imagined. Today, we will learn the unexpected truth about what we Christians are to do when we see a fellow Christian caught in a sin by answering this question, “Why are Christians to be their brother’s keepers?”
We’ll answer this question by first turning to our sermon reading from the book of Galatians. The author of this book is the Apostle Paul. Paul wrote this book to Christian churches in Galatia, which is in modern day Turkey. In our reading, Paul tells the Galatians and us today when he was in the city of Antioch in Syria, the Apostle Peter came for a visit. When he first arrived, Peter ate the same food the Gentile Christians, which is people who aren’t Jews, ate even though it was against the Mosaic Law because he knew people were saved through faith in Jesus as their Savior and not by obeying the Mosaic Law. However, when Jews came from Jerusalem, Peter started eating only food that was allowed by the Mosaic Law. When other Jewish Christians saw Peter do this, they did the same thing because Peter’s actions led them to believe people were saved by believing in Jesus as their Savior AND by obeying the Mosaic Law. Since people’s salvations were in danger, Paul did something unexpected. He confronted Peter in front of everyone. He said to him in verse 14, “If you, a Jew, live like the Gentiles and not like the Jews, why do you compel the Gentiles to live like the Jews?” Paul said this to Peter, so he repented of his sins and would still go to heaven, and also so the Jewish Christians believed they were saved through faith in Jesus as their Savior and not by obeying the Mosaic law so they would as well.
What Paul did to Peter was certainly unexpected. After all, Peter was one of the leaders of the Christian Church. But Paul acted as his brother’s keeper because Jesus commands all Christians, including you and me, to confront any Christian who is unrepentant. Listen to what Jesus says in our gospel reading from Matthew 18:15. He says, “If your brother sins against you, go and show him his sin just between the two of you.” Here Jesus tells us when we see a brother, that is a fellow Christian, skipping church all the time, getting drunk, living with their boyfriend or girlfriend, getting divorced for unbiblical reasons, or committing other sins, we must confront them about it. I must clarify Jesus is not telling us to be Bible thumpers and point out every single sin people commit. Instead, we must confront Christians who have made it clear by their words and actions they are unrepentant or not sorry for their sins. The reason Jesus commands us to be our brother’s keeper is Key Point #1: because anyone who is unrepentant of their sins will not go to heaven. Even though these people may say they believe in Jesus, they are unbelievers because by their refusal to live their faith and obey God’s commands they are saying they don’t want Jesus to forgive their sins.
Now if you remember back to Confirmation Class, this is called the Ministry of the Keys. In our gospel reading, Jesus explains in more detail how we are to carry this out. First, Jesus tells us when we see a Christian family member, friend, or church member who is clearly unrepentant of their sins we should go and talk to them one on one. We should tell them they need to repent of their sins and ask God to forgive them. If they refuse, we must use the locking or binding key on them by saying, “As long as you refuse to repent of your sins, you are an unbeliever. Your sins are not forgiven, and you are locked out of heaven.” But, if they repent, we must use the unlocking or loosing key on them by saying, “Since you have repented of your sins, you are a believer. Your sins are forgiven, and heaven is open to you.” Sadly, people aren’t always going to repent the first time we confront them. That is why Jesus tells us the next step is we must bring 1 or more people along with us, so they realize just how serious their unrepentance is. If they still refuse to repent, then we must tell our church’s pastor and Elders about it. If they refuse to repent even after the pastor and Elders talks to them, then the church must use the Public Use of the Keys by using the locking key to excommunicate them from the church. Though this may seem like an unloving action, it is very loving. When the church excommunicates someone, they are telling that person as long as they refuse to repent, they are an unbeliever and will go to hell. The hope is they see how serious this is and they repent. When they do, the church welcomes them back with open arms and uses the unlocking key to assure them they are a believer. Their sins are forgiven and will go to heaven. As Christians we serve as our brother’s keepers Key Point #2: because only repentant believers, that is people who are sorry for their sins, will go to heaven.
However, even though Jesus commands us to be our brother’s keepers, this is a very unexpected thing to do, especially in today’s society where people who commit serious crimes are at times declared innocent. As sinful human beings, our human reason and personal feelings convince us we have no right to be our brothers’ keepers and tell someone what they are doing is wrong. And so, naturally when we do confront an unrepentant Christian, they naturally make excuses to justify what they are doing is ok. Sometimes they get mad at us and attack us by saying things like we have no right to tell them how they should live their lives, or we are being unloving and judgmental, or we just want to kick them out of the church. Naturally, as sinful human beings ourselves, we Christians are very reluctant to confront an unrepentant Christian about their sins because we don’t to deal with these things. And so, our human reason and personal feelings come up with excuses to make ourselves feel better like, “I’m not my brother’s keeper, or I have no right to talk to that person about their sins because I am just as big of a sinner as they are, I don’t know what to say, or I don’t want to hurt my relationship with them.” But here is another unexpected truth. When we refuse to obey Jesus’ command to confront an unrepentant Christian, not only will that person remain unrepentant and be declared “guilty” by Jesus on Judgment Day and not go to heaven, but so will we.
It is certainly not easy being our brother’s keepers. Doing Elders work is by far the thing I like doing the least as a pastor. But like we learned last week, we must all take up our cross and follow Jesus and be our brother’s keeper even when it is hard. The only way we will find the courage and strength to do this is by remembering what Jesus did for us. Look at what Paul says in verse 16, “We know that a person is not justified by the works of the law but through faith in Jesus Christ.” It certainly was not easy for Jesus to live a sinless life and suffer and die on the cross. But Jesus’ love compelled Him to do it so that as Paul said in verse 16 Key Point #3: we, and all who have faith in Jesus as our Savior, are justified, that is we are declared not guilty of our sins, and we are certain we will go to heaven. However, God doesn’t just want us to believe in Him and go to heaven. Key Point #4: God loves all people and wants all people to go to heaven. And so out of love for all people, Jesus sends us repentant Christians to be our brother’s keepers and confront the unrepentant Christians we know so they repent of their sins and put their faith in Jesus as their Savior and join us in heaven one day.
Now many people in our society will argue that it is very unloving for us to tell anyone, including an unrepentant Christian, what they are doing is wrong. Well, think about this for a moment. Imagine you are enjoying a nice summer day in your boat on Swan Lake. As you are driving along, you see someone who swims too far from the shore and is drowning. Which is the more loving thing to do? To tell that person everything will be alright, and then drive away and let them drown, or to help them into your boat and save their life. Obviously, it is more loving to save the person from drowning. In a similar way, Christian love compels us to do the unexpected. When we see a fellow Christian who is clearly unrepentant of their sins, we must be our brothers’ keeper and confront them about their sins to try and lead them to repentance. So they are a believer and Jesus and join us in heaven. Amen.
And the peace of God, which transcends all understanding, will guard your hearts and your minds in Christ Jesus. Amen.