Mateus 18

15 But if thy brother shall sin against thee, go and tell him his fault, between thee and him alone: if he will hear thee, thou hast gained thy brother.

16 But if he will not hear, take with thee one or two more, that by the mouth of two or three witnesses every word may be established.

17 And if he will not hear them, tell it to the church; but if he will not hear the church, let him be to thee as an heathen and a publican.