Mateus 18

15 Therefore if thy brother shall sin against thee, go and reprove him between thee and him alone; if he shall hear thee, thou hast gained thy brother.

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

17 And if he shall neglect to hear them, tell [it] unto the church; but if he neglects to hear the church, let him be unto thee as a worldly man and a publican.