Act 2:38 And Peter said to them, “Repent and be baptized every one of you in the name of Jesus Christ for the forgiveness of your sins, and you will receive the gift of the Holy Spirit.“
Baptism is a physical act that has a supernatural effect. There’s nothing in the water, but something happens in the water! The spiritual effect of baptism is that you willingly enter into a covenant relationship with God.
When you are baptized, you have put off the old way of living, burying your past – the life that leads to eternal death – and rising again in your faith in God.
There is a permanent spiritual mark put upon your heart. Baptism changes your spiritual identity!