Matthew 18
15 Ref And if thy brother sin against thee, go, show him his fault between thee and him alone: if he hear thee, thou hast gained thy brother.
16 Ref But if he hear `thee' not, take with thee one or two more, that at the mouth of two witnesses or three every word may be established.
17 Ref And if he refuse to hear them, tell it unto the church: and if he refuse to hear the church also, let him be unto thee as the Gentile and the publican.