What does the Bible say about water baptism?

The Bible teaches that water baptism serves as a figure showcasing the salvation believers receive through their union with Christ. 1 Peter 3:21 describes baptism as not merely an external act but as an appeal to God for a good conscience, signifying faith in the redemptive work of Christ. It represents being buried with Him in baptism unto death, affirming that just as Christ was raised from the dead, believers also walk in newness of life (Romans 6:4). Thus, baptism is intrinsically tied to the believer's faith in Christ's atoning sacrifice and signifies their public confession of faith.