Baptism
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AN outward expression of a Inward change
A Decleration
“Therefore, if anyone is in Christ, he is a new creation; the old has gone, the new has come!” - 2 Corinthians 5:17
It involves applying water to the Christian which symbolizes their death to the old way of life (Romans 6:3-4), and then the breaking free from water which symbolizes the new life God provides them.