Matthew 18:15 in the King James Version
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.
Context
14 Even so it is not the will of your Father who is in heaven that one of these little ones should perish.
15 “If your brother sins against you, go, show him his fault between you and him alone. If he listens to you, you have gained back your brother.
16 But if he doesn’t listen, take one or two more with you, that at the mouth of two or three witnesses every word may be established.