"Christian baptism is the immersion of a believer in water in the name of the Father, the Son and the Holy Spirit. It is an act of obedience symbolizing the believer's faith in a crucified, buried, and risen Saviour, the believer's death to sin, the burial of the old life, and the resurrection to walk in newness of life in Christ Jesus. It is a testimony to his faith in the final resurrection of the dead. Being a church ordinance, it is prerequisite to the privileges of church membership and to the Lord's Supper" (Baptist Faith and Message, 2000, article VII).
Christian baptism is an act of obedience. Jesus commanded His disciples, "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, teaching them to observe all things that I have commanded you; and lo, I am with you always, even to the end of the age" (Matthew 28:19-20). To be baptized is to submit to God as Father, Son, and Holy Spirit. It is a command for all the disciples of Christ until the end of the age. True faith in Christ desires to obey Jesus as Lord. It is the "the obedience to the faith among all nations for His name" (Romans 1:5).
Christian baptism is a symbol of faith. As a wedding ring is a symbol that someone is married and committed to a spouse, so baptism is a symbol of our faith and commitment to the Lord Jesus Christ. Jesus said, "If you love Me, keep My commandments" (John 14:15). The believer's baptism is a public symbol of his love for Christ.
Christian baptism is burial to the old life. "Therefore we were buried with Him through baptism into death, that just as Christ was raised from the dead by the glory of the Father, even so we also should walk in newness of life" (Romans 6:4). Burial is pictured by baptism through immersion. We died with Christ (Romans 6:8; Galatians 2:20). We identify with the death of Christ in our place and for our sins. We are changed by the power of the Holy Spirit, the same Spirit that raised Jesus from the dead (Romans 1:4), that we may live a new life.
Christian baptism is a testimony of faith in Christ. It is a way to make our public profession of faith in Christ. It is a time to confess, "Jesus is Lord" (1 Corinthians 12:3; Romans 10:9). In word and deed our testimony for Christ is made public. Salvation is committing our lives to the Lordship of Jesus Christ. The act of baptism is our testimony of faith to His death for our sins, and His resurrection for our justification from all sin. It also testifies to our future resurrection from the dead. That is our blessed hope in Christ (1 Corinthians 15:51-54; Titus 2:13).