Baptism

Following Christ:
Jesus, who was without sin, humbled Himself and was baptized, in obedience to the Father, witnessed by the Holy Spirit, and gave us an example to follow.
Mark 1:11

An Act of Obedience:
Water baptism is an act of faith and obedience to the commands of Christ.
Matthew 28:19-20

A Public Declaration:
Baptism declares that you are a follower of Jesus Christ. It is a public confession of your faith in, and commitment to, Jesus Christ. It is the next step after salvation through repentance and faith and is an important foundation for the Christian life.
Mark 16:15-16