Matthew 5:13
You are the salt of the earth. But if the salt loses its saltiness, how can it be made salty again? It is no longer good for anything, except to be thrown out and trampled by men.

The Messiah came as salt on the Earth.He rebuked sin, and called people to repent be baptized, and to follow Him. You can not become the light and shine among men, if you neglect warning and rebuking people in regards to sin. And what the Bible says are sins, is sin regardless of what priests and laymen might tell you.