Can you cite any Scriptures that say baptism is a public affirmation of your following Jesus Christ?
Any?
I Pet. 3:21. And that water is like the baptism which now saves younot the washing of dirt from the body, but the promise made to God from a good conscience. And this is because Jesus Christ was raised from the dead.
In the New Testament, baptism was no casual custom, no ho-hum ritual. Baptism was, and is a pledge made to God from a good conscience (I Pet. 3:21 TJB).
The Apostle Pauls high regard for baptism is demonstrated in the fact that he knows all of his readers have been instructed in its importance. You wholeheartedly obeyed the form of teaching to which you were committed(Rom. 6:17).