Acts 2:38 teaches that the right response to the gospel is repentance toward Jesus, publicly expressed through baptism in his name. Peter tells a crowd convicted by his sermon to repent and be baptized, and promises forgiveness and the gift of the Holy Spirit. Some read this verse to mean baptism is required for salvation. But read alongside the rest of the New Testament, it’s clear that we are saved by grace through faith, and baptism is the first step of obedience for those who believe.
Setting the Scene in Acts 2:37-41
On the day of Pentecost, Peter preached the first sermon of the church age. He explained the outpouring of the Holy Spirit and then proclaimed that Jesus, whom the crowd had crucified, had been raised from the dead and exalted as Lord and Messiah (Acts 2:22-36). Now we see how the crowd responded.
This passage contains one of the most debated verses in the New Testament. Sincere Christians have landed in different places on what Acts 2:38 means, and the question matters, because it touches how a person is saved. So it’s worth slowing down, reading carefully, and letting the rest of Scripture help us understand it. For a topical overview of the question, see Does Baptism Save?
Cut to the Heart
Peter’s sermon hit its mark.
Acts 2:37-39 When the people heard this, they were cut to the heart and said to Peter and the other apostles, “Brothers, what shall we do?” Peter replied, “Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins. And you will receive the gift of the Holy Spirit. The promise is for you and your children and for all who are far off—for all whom the Lord our God will call.”
The crowd was “cut to the heart.” The Greek word describes being stabbed or pierced. Peter had just told them that they had crucified the very Messiah God sent, and they believed him. Their question, “What shall we do?”, shows hearts that had already shifted. They weren’t arguing or defending themselves. They were ready to submit.
Peter’s answer was surprising for a Jewish audience. Jews were familiar with ritual washings, and many scholars note that Gentiles who converted to Judaism were often immersed as a sign of leaving their old life behind. But Jews born into the covenant didn’t think they needed that kind of washing. Peter told them that every one of them needed to repent and be baptized. In a sense, he was saying they were no better off than Gentiles. They needed to start over with Jesus.
This baptism was also different from John the Baptist’s. John’s baptism expressed repentance and pointed ahead to the coming Messiah. Christian baptism is “in the name of Jesus Christ,” identifying a person with the crucified and risen Lord. Later in Acts, Paul meets some followers who only knew John’s baptism and baptizes them in Jesus’ name (Acts 19:1-7). And the promise wasn’t just for Peter’s audience. It was for their children and for “all who are far off,” a hint that the gospel was headed to the Gentiles.
Reading Acts 2:38 Carefully
Read on its own, Acts 2:38 can sound like a formula: repent plus baptism equals forgiveness. That’s how some traditions understand it. Catholic, Orthodox, and many Lutheran Christians see baptism as a means through which God gives saving grace. Churches of Christ and some other groups teach that baptism by immersion is the moment sins are forgiven. Many evangelicals, especially in Baptist and nondenominational churches, see baptism as an ordinance, a command that believers obey to publicly show the faith that has already saved them. PursueGOD holds this last view, but it’s important to understand the others fairly.
Some scholars point out a detail in the Greek that’s easy to miss in English. “Repent” is plural, addressed to the whole crowd, and “your sins” is also plural. But “be baptized” is singular, addressed to each individual. Some see this as linking forgiveness most directly with repentance. Others debate the meaning of the little word translated “for” in “for the forgiveness of your sins.” Honestly, grammar alone probably won’t settle the question. The better approach is one of the most basic principles of Bible study: let Scripture interpret Scripture. Use clearer passages to help understand the harder ones.
Letting Scripture Interpret Scripture
When we do that, the picture becomes clearer. In Peter’s very next sermon, he calls people to respond without mentioning baptism at all.
Acts 3:19 Repent, then, and turn to God, so that your sins may be wiped out, that times of refreshing may come from the Lord…
Later, when Peter preached to the Roman centurion Cornelius and his household, something remarkable happened (Acts 10).
Acts 10:43-47 All the prophets testify about him that everyone who believes in him receives forgiveness of sins through his name. While Peter was still speaking these words, the Holy Spirit came on all who heard the message. The circumcised believers who had come with Peter were astonished that the gift of the Holy Spirit had been poured out even on Gentiles. For they heard them speaking in tongues and praising God. Then Peter said, “Surely no one can stand in the way of their being baptized with water. They have received the Holy Spirit just as we have.”
Peter said that everyone who believes receives forgiveness. Then the Holy Spirit came on these Gentiles before they were baptized. Since the gift of the Spirit is God’s seal on those who belong to him (Ephesians 1:13), Cornelius and his household were clearly saved. Then they were baptized. Paul says the same thing in different words: if you declare that Jesus is Lord and believe God raised him from the dead, you will be saved (Romans 10:9). We are saved by grace through faith, not by works (Ephesians 2:8-9).
Faith Has Always Been the Way
The Bible also shows that people have always been made right with God by faith. Paul uses Abraham as his main example. God credited Abraham’s faith as righteousness (Genesis 15:6), and Paul points out when that happened.
Romans 4:9-11 Is this blessedness only for the circumcised, or also for the uncircumcised? We have been saying that Abraham’s faith was credited to him as righteousness. Under what circumstances was it credited? Was it after he was circumcised, or before? It was not after, but before! And he received circumcision as a sign, a seal of the righteousness that he had by faith while he was still uncircumcised. So then, he is the father of all who believe but have not been circumcised, in order that righteousness might be credited to them.
Abraham was declared righteous before he was circumcised. Circumcision was a sign and seal of the faith he already had. In the same way, baptism is a sign of faith, not the thing that makes us righteous. It would be strange for Paul to argue so hard that Gentiles don’t need circumcision to be saved, only to replace it with another outward ritual. The thief on the cross is another example. He trusted Jesus, turned from his mocking, and Jesus promised he would be in paradise that day (Luke 23:43). He was never baptized.
Baptized and Added
None of this makes baptism unimportant. Look at how the crowd responded.
Acts 2:40-41 With many other words he warned them; and he pleaded with them, “Save yourselves from this corrupt generation.” Those who accepted his message were baptized, and about three thousand were added to their number that day.
Those who believed were baptized. In the New Testament, baptism wasn’t put off for months or years. It was the normal, immediate response of a new believer. Archaeologists have uncovered many Jewish ritual baths near the southern steps of the Temple Mount, and some suggest that facilities like these could have made it possible to baptize such a large crowd in a single day. Either way, the church grew from about 120 people (Acts 1:15) to over 3,000 overnight.
Baptism is a powerful picture of the gospel. Going under the water pictures being buried with Christ, and coming up pictures being raised to new life with him (Romans 6:3-4). Jesus commanded it (Matthew 28:19), and believers should gladly obey.
What This Means for Us
The active ingredient in salvation is faith in Jesus. But biblical faith isn’t just agreeing with facts. Peter’s first command was “Repent.” The Greek word metanoia means a change of mind and direction. It’s the attitude of the crowd at Pentecost: “What shall we do?” Repentance is a heart that stops resisting Jesus and submits to him as Lord. That new attitude will change our actions over time, but at the moment of faith, it begins as surrender.
If you’ve trusted Jesus but haven’t been baptized, don’t neglect it. It isn’t what saves you, but it is the first step of obedience for every follower of Jesus, and it’s a public way of saying, “I belong to him now.”
The Takeaway
What does Acts 2:38 teach about baptism and salvation? It calls us to repent and be baptized in Jesus’ name. Read with the rest of Scripture, it shows that forgiveness comes through repentant faith in Jesus, as it always has. Baptism isn’t the active ingredient of salvation, but it is the joyful first step of obedience for everyone who believes.
