On Baptism (4): If We Are Saved by Faith, Why Do We Still Need Baptism?

“We are not saved by works; we are saved by faith.” That is an essential New Testament truth, and I agree with it.

But a question immediately follows: if we are saved by faith, why is baptism necessary? If baptism is connected with forgiveness and salvation, have we added a “work” to faith?

The key question may not be, “Which saves us—faith or baptism?” It is whether the New Testament treats faith in Jesus and baptism as two competing methods of salvation. The more I study the texts, the less plausible that appears. The New Testament pattern is much simpler: because we believe, we are baptized.

1. Paul Really Does Say “Not by Works”

Paul’s teaching must not be weakened. Romans 3:28 says that a person is justified by faith apart from works of the law. Romans 4:4–5 contrasts wages owed to a worker with faith in the God who justifies the ungodly. Ephesians 2:8–9 says that salvation is by grace through faith, not a result of works, so that no one may boast.

If baptism were a meritorious deed by which we purchased salvation from God, it would indeed contradict Paul’s gospel. The foundation of salvation is not my baptism, my repentance, or even the quality of my faith. The foundation is Jesus Christ.

But does “works” mean every human response whatsoever? Believing, repenting, confessing Jesus as Lord, calling on his name, and praying are all human responses. The mere fact that a person does something does not automatically place it in the category of meritorious works excluded by Paul. The real question is this: is baptism a work by which we earn salvation, or an obedient response produced by faith in Christ?

2. The New Testament Pattern Is Not “Faith or Baptism?”

At Pentecost, after hearing the gospel, the crowd asked Peter what they should do. Peter answered: “Repent and be baptized every one of you in the name of Jesus Christ for the forgiveness of your sins” (Acts 2:38, ESV 2025). Those who received his word were baptized, and about three thousand were added that day (Acts 2:41).

Luke does not narrate the pattern as “believe → salvation completely finished → get baptized later when convenient as a public testimony.” He presents hearing the gospel, receiving the message, repentance and baptism, and incorporation into the community of disciples as one conversion sequence.

The pattern continues: Samaritans believe Philip’s gospel and are baptized (Acts 8:12); Philip preaches Jesus to the Ethiopian official and he immediately seeks baptism (8:35–38); the Philippian jailer hears “Believe in the Lord Jesus,” receives the word, and is baptized with his household that very night, while Luke summarizes the event by saying that he had believed in God (16:30–34); Corinthians hear, believe, and are baptized (18:8); and people who had received only John’s baptism hear about Jesus and are baptized in the name of the Lord Jesus (19:4–5).

The New Testament conversion pattern can therefore be summarized simply as believing and being baptized. This conclusion does not depend on the textually disputed longer ending of Mark; Acts repeatedly presents the pattern on its own.

3. Paul Himself Fits the Same Pattern

Paul encountered the risen Christ directly, called Jesus “Lord,” and obeyed his instruction to enter Damascus. Yet when Ananias met him, he did not say, “Everything was completed the moment you believed on the road; baptism is now only a public testimony.” Instead he said: “And now why do you wait? Rise and be baptized and wash away your sins, calling on his name.” (Acts 22:16, ESV 2025)

“Calling on his name” and baptism are not separated in Paul’s conversion account. This also illuminates Romans 10:13: “everyone who calls on the name of the Lord will be saved.” Paul’s own story places calling on the Lord, baptism, and the washing away of sins within the same conversion event. The New Testament often seems less concerned than we are with identifying the exact second in which one element ends and another begins. Faith, repentance, calling on the Lord, and baptism belong together.

4. Paul Does Not Put Baptism on the Opposite Side from Faith

Romans 5:1 says that “we have been justified by faith.” Yet in the next chapter Paul addresses the same Christian community: “Do you not know that all of us who have been baptized into Christ Jesus were baptized into his death?” (Rom. 6:3, ESV 2025). Notice the “all of us.” Paul assumes a shared baptismal experience among these Christians.

We therefore should not read Romans 5, construct a chronology of “faith → salvation completely finished → baptism later,” and then use that chronology to control Romans 6. The same people are both justified by faith and baptized into Christ.

5. Through Faith—and Baptized into Christ

Galatians 3:26–27 places the ideas even closer together. Paul first says that they are sons of God through faith in Christ Jesus, then immediately says that those baptized into Christ have put on Christ. In a letter fiercely opposed to justification by works of the law, Paul does not treat faith and baptism as rival means of salvation.

Colossians 2:12 is even more explicit about the relationship: believers have been buried with Christ in baptism and raised with him through faith in the powerful working of God who raised Jesus from the dead. This excludes the idea that water mechanically saves. But it also sits uneasily with the idea that faith has already completed salvation and baptism is merely a later symbol. Paul places baptism, faith, God’s action, and union with Christ within the same picture.

6. One Faith, One Baptism, One Spirit

First Corinthians 12:13 says that in one Spirit we were all baptized into one body. Again Paul speaks of “all” Christians. Ephesians 4 places “one body,” “one Spirit,” “one Lord,” “one faith,” “one baptism,” and “one God” together.

There is therefore insufficient reason to split Christian water baptism from the Spirit’s work of incorporating people into Christ’s body as though they were two unrelated baptisms. Christians share “one baptism”: a visible act in water that is at the same time bound up with entering Christ, his body, and the Spirit’s work.

7. “Baptism … Now Saves You”

First Peter 3:21 says, “Baptism, which corresponds to this, now saves you,” and immediately qualifies the statement: “not as a removal of dirt from the body but as an appeal to God for a good conscience, through the resurrection of Jesus Christ” (ESV 2025). Whatever precise nuance we assign to the debated phrase concerning conscience, the main clause and its foundation remain: Peter can speak of baptism as saving, while locating its efficacy through the resurrection of Jesus Christ.

The water is not the savior. Human religious merit is not the savior. The risen Christ is the savior. Yet Peter still places baptism within this Christ-centered account of salvation.

8. Wasn’t Abraham Justified by Faith Before Circumcision?

Romans 4 clearly says that Abraham was counted righteous before he was circumcised. Circumcision therefore was not a meritorious act by which Abraham earned righteousness.

Sometimes the argument then takes another step: circumcision was a sign after justification; baptism corresponds to circumcision; therefore Christian salvation must likewise be complete before baptism. But that final step is not stated by Romans 4 itself.

Moreover, when God commanded circumcision in Genesis 17, Abraham did not reason, “I was justified by faith in Genesis 15, so this command has nothing to do with my faith.” Genesis twice emphasizes that he obeyed on that very day. God even says that the uncircumcised male has “broken my covenant” (Gen. 17:14). Abraham’s story does not separate faith from obedience. He is justified by faith, and that same faith responds obediently when God commands.

We should not reverse the argument and claim that if Abraham had refused circumcision, the justification of Genesis 15 would never have occurred; the text does not answer that counterfactual. But we should ask whether persistent, knowing rejection of God’s command is compatible with the faith one professes. James later uses Abraham to say that faith worked together with his works and was completed by them (James 2:22). Works do not replace faith; obedience expresses faith.

9. We Are Baptized Because We Believe Christ

This may be the most easily overlooked point. We do not first “believe in Christ” and then add a second means of qualification called baptism. We are baptized precisely because we believe Christ.

After his resurrection, Jesus commanded his followers to make disciples of all nations and baptize them in the name of the Father, Son, and Holy Spirit (Matt. 28:19). Baptism is not a religious achievement humans invented to earn grace. It is a response commanded by the risen Christ. The question is therefore not whether baptism is an action—it plainly is—but whether the action attempts to earn grace or obeys Christ because one trusts him. The New Testament presents the latter.

10. What About the Thief on the Cross?

The thief’s case occurs before Jesus’ death, resurrection, post-resurrection Great Commission, and Pentecost. Christian baptism into Christ’s death had not yet become the apostolic conversion pattern. Luke has also already emphasized that “the Son of Man has authority on earth to forgive sins” (Luke 5:24). The thief receives a promise of salvation directly from Jesus while Jesus is still on earth.

If we want a case after Jesus’ death and resurrection involving someone who directly encountered the risen Christ, Paul is the more relevant comparison: he encountered Christ, believed and obeyed, and was then told, “Rise and be baptized and wash away your sins, calling on his name.”

11. What About “Christ Did Not Send Me to Baptize”?

First Corinthians 1:17 is often cited: “Christ did not send me to baptize but to preach the gospel.” But the surrounding discussion concerns factionalism in Corinth. Paul asks whether they were baptized in Paul’s name and gives thanks that he personally baptized only a few. The issue is consistently who performed their baptisms, not whether they were baptized at all.

Acts 18:8 directly says that many Corinthians heard Paul, believed, and were baptized. Evangelizing and personally administering baptism can be carried out by different people; that does not separate believing the gospel from receiving baptism. If someone claims that Corinth normally contained people whose conversion was complete but who remained unbaptized, that claim requires textual evidence rather than imagined exceptions.

12. So Are We Saved “At the Moment of Baptism”?

If that phrase means that water automatically produces salvation at a particular second, I reject it. If it means that baptism is a ritual independent of faith and saves simply by being performed, I reject that too.

But if the question is where the New Testament normally locates the completion of conversion, forgiveness, entry into Christ, and new life, baptism occupies a remarkably important place. Acts 2:38 connects baptism with forgiveness; Acts 22:16 connects baptism, washing away sins, and calling on the Lord; Romans 6 speaks of baptism into Christ and his death; Galatians 3 of baptism into Christ and putting on Christ; Colossians 2 of burial with Christ in baptism and resurrection with him through faith; 1 Corinthians 12 of baptism into one body; and 1 Peter 3 of baptism saving through Christ’s resurrection.

What we do not see as a clear, normal New Testament pattern is: hear the gospel → believe → be explicitly declared forgiven with conversion fully complete → wait for some later time → receive baptism merely as testimony.

I therefore think the cumulative evidence is best expressed this way: baptism is the identifiable moment within a faith-driven conversion event that is associated with forgiveness, entry into Christ, and the beginning of new life.

Saved by Faith—So Why Be Baptized?

Perhaps the question itself should be reframed. Not, “If I already believe, why must I add baptism?” but, “If I truly believe this crucified and risen Christ who calls me to follow him, how does that faith respond in the New Testament?”

The recurring picture is: hear the gospel, believe in Jesus, repent, call on his name, receive baptism, and enter Christ.

This is not faith plus works. It is faith that responds.

We do not earn salvation by being baptized. Christ saves us. God’s powerful working raises us with Christ. The Spirit brings us into one body.

What do we do? We believe him.

And precisely because we believe him, we are baptized.

Scripture quotations are from the English Standard Version (ESV 2025).