Proverbs 27:5

"He that rebuketh a man afterwards shall find more favour than he that flattereth with the tongue."

"Them that sin rebuke before all, that others also may fear."

"But when I saw that they walked not uprightly according to the truth of the gospel, I said unto Peter before them all, If thou, being a Jew, livest after the manner of Gentiles, and not as do the Jews, why compellest thou the Gentiles to live as do the Jews?"

"Moreover if thy brother shall trespass against thee, go and tell him his fault between thee and him alone: if he shall hear thee, thou hast gained thy brother."

"Thou shalt not hate thy brother in thine heart: thou shalt in any wise rebuke thy neighbour, and not suffer sin upon him. and...: or, that thou bear not sin for him"