Where is baptism mentioned in the Bible and what significance does it hold in Christian faith?

Baptism is mentioned in The Bible in several places, including Matthew 3:13-17, Mark 1:9-11, and Acts 2:38. In Christian faith, baptism is a symbolic act of purification and initiation into the community of believers. It represents the washing away of sin and the new life in Christ. Christians believe that through baptism, they are united with Jesus in his death and resurrection, and receive the Holy Spirit to guide and empower them in their faith journey.