Baptism is one of the first things Jesus commanded his followers to practise, and it has marked the entrance into the Christian life ever since. In baptism a believer is washed with water in the name of the Father, Son, and Holy Spirit — a simple act rich with meaning, ancient in the church and precious to every generation of believers. It is a public declaration of faith, a picture of the gospel, and a sign of union with Jesus Christ in his death and resurrection. Though Christians have long differed over some of its details, it has always stood at the threshold of the Christian life, and it is worth understanding well. Jesus made it part of the church’s marching orders: “Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit” (Matthew 28:19). From the earliest days of the church, to believe in Jesus and to be baptized belonged together as the natural first step of a new life. Here is what baptism means, why Jesus commanded it, and why it still matters for every believer today.
Baptism was commanded by Jesus himself
We practise baptism for the simplest and strongest of reasons: Jesus commanded it. In the Great Commission he tied baptism directly to disciple-making, so that from the very beginning, to become a follower of Jesus was to be baptized. On the day the church was born, Peter’s first instruction to the convicted crowd was, “Repent and be baptized every one of you in the name of Jesus Christ for the forgiveness of your sins” (Acts 2:38) — and about three thousand were baptized that day (Acts 2:41).
So baptism is not an optional extra or a private preference; it is the appointed way a believer confesses Christ before the world and is welcomed into his church. Throughout the book of Acts, faith and baptism go together: when people believed, they were baptized, often at once. To follow Jesus is, in the normal course of things, to be baptized — obeying the One we now call Lord in the first public step of a new life.
Baptism pictures the gospel
Baptism is a vivid, acted-out picture of the heart of the gospel: death, burial, and resurrection. Going down into the water portrays dying to the old life and being buried with Christ; coming up out of the water portrays rising to new life in him. Paul makes this explicit: “we were buried therefore with him by baptism into death, in order that, just as Christ was raised from the dead by the glory of the Father, we too might walk in newness of life” (Romans 6:3–4).
This is why baptism is so moving to witness: it is the gospel made visible. In the space of a moment, a person’s whole story is preached — the old self buried, the new self raised, all by union with the crucified and risen Christ. “Having been buried with him in baptism... you were also raised with him through faith in the powerful working of God” (Colossians 2:12). Every baptism proclaims that Jesus died, was buried, and rose again, and that his people share in it.
Baptism is a sign of union with Christ
Baptism marks the believer’s union with Jesus and incorporation into his people. Paul writes, “For as many of you as were baptized into Christ have put on Christ” (Galatians 3:27). To be baptized is to be publicly identified with Jesus — to take his name, to be clothed with him, to be numbered among his followers. It is the outward badge of an inward reality: that we now belong to Christ and to his family, the church.
It is important to hold this rightly. The water itself does not save; it is a sign and seal of a salvation received by grace through faith. Peter is careful to say that baptism saves “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” (1 Peter 3:21) — its power is not in the water but in what it points to, the risen Christ. Baptism is the God-appointed sign of a real inward grace, not a magic ritual that works apart from faith.
Baptism is a public confession of faith
Baptism is meant to be public, because it is a confession. In the ancient world, to be baptized in the name of Jesus was a bold, sometimes costly, declaration that you had left your old allegiances and belonged now to Christ. It still is a confession — a way of standing up before family, friends, and the church to say, “I am a follower of Jesus.” When the Ethiopian official believed, he stopped the chariot at the first water he saw and said, “See, here is water! What prevents me from being baptized?” and Philip baptized him at once (Acts 8:36–38).
This public dimension matters. Jesus promised to confess before his Father those who confess him before others, and baptism is one of the clearest ways a new believer does exactly that. It draws a line, marks a beginning, and gives the church a joyful occasion to welcome a new brother or sister. Many believers can point back to their baptism as a defining moment when they nailed their colours to the mast and declared, once and for all, whose they are.
Christians differ on the details — but agree on the heart
Sincere Christians have long differed over some questions about baptism — whether it is for believers only or also for the children of believers, and whether it is by immersion, pouring, or sprinkling. These differences are real, and worth thinking through carefully with an open Bible and a humble heart. But they should not obscure the deep agreement beneath them: that baptism is commanded by Christ, that it signifies union with him in his death and resurrection, and that it is bound up with faith and the forgiveness of sins.
Where you land on the finer points will usually follow the teaching of the church tradition God has placed you in, and these are matters over which believers can disagree in love without breaking fellowship. What no Christian should do is neglect baptism altogether. If you have trusted Christ and never been baptized, the pattern of the New Testament is clear: this is the next step of obedience. The command Ananias gave the newly-converted Paul still speaks: “Rise and be baptized” (Acts 22:16).
Water and the Spirit
The New Testament speaks of baptism with water and closely links it to the work of the Holy Spirit, though the two are distinct. Water baptism is the outward sign; the inward reality is the cleansing and new life the Spirit gives. On the day of Pentecost, Peter joined them in a single promise: “Repent and be baptized... and you will receive the gift of the Holy Spirit” (Acts 2:38). At the house of Cornelius, the Spirit fell on the hearers before they were baptized, and Peter asked, “Can anyone withhold water for baptizing these people, who have received the Holy Spirit just as we have?” (Acts 10:47).
So baptism is never merely an outward ritual detached from the Spirit’s work; nor is it the Spirit’s work reduced to the water. The sign and the thing signified belong together. Paul can therefore speak of “one Lord, one faith, one baptism” (Ephesians 4:5) as marks of the one people God is gathering. Whatever a Christian’s understanding of the finer points, all agree that baptism belongs to a life born of the Spirit — the outward washing pointing to the inward renewal only God can give.
Baptism looks back and forward
Finally, baptism is meant to shape the whole of the Christian life that follows it. Because we were buried and raised with Christ, we are called to live it out — to “walk in newness of life” (Romans 6:4), reckoning ourselves dead to sin and alive to God. Baptism is not the finish line but the starting gun; it marks the beginning of a life lived in the power of the resurrection.
So if you are a believer, treasure your baptism and live up to it: you have been buried and raised with Christ, so be who you now are. And if you have believed but never been baptized, do not delay the joyful obedience Jesus commanded. Baptism preaches the gospel, confesses your faith, and marks you as belonging to Christ — a simple act of water that says, to God and to the world, that you have died and risen with your Lord, and now the whole of your life is his. Few moments in the Christian life are as joyful to give or to witness, for in it the whole gospel is preached in a single act, and a new believer takes their public place among the people of God.