Christian baptism is a way of demonstrating your faith in Jesus Christ. Baptism publicly declares your identification with Jesus Christ as your Saviour and the leader of your life. Baptism is like a wedding ring. The ring does not make the marriage, but is a symbol of your commitment. In the same way, baptism is an outward symbol of the inward commitment you have made in your heart to follow Jesus Christ. (See Ephesians 2:8-9 CEV)

Matt 28:11-20 (MSG)

“Go out and train everyone you meet, far and near, in this way of life, marking them by baptism in the threefold name: Father, Son, and Holy Spirit. Then instruct them in the practice of all I have commanded you. I’ll be with you as you do this, day after day after day, right up to the end of the age.”