Do not rebuke mockers or they will hate you; rebuke the wise and they will love you.Instruct the wise and they will be wiser still; teach the righteous and they will add to their learning. (niv)
Let a righteous man strike me— that is a kindness; let him rebuke me— that is oil on my head. My head will not refuse it, for my prayer will still be against the deeds of evildoers. (niv)