Deuteronomy 19:15-17

Young's Literal Translation

¹⁵ `One witness doth not rise against a man for any iniquity, and for any sin, in any sin which he sinneth; by the mouth of two witnesses, or by the mouth of three witnesses, is a thing established.

¹⁶ `When a violent witness doth rise against a man, to testify against him apostacy,

¹⁷ then have both the men who have the strife stood before Jehovah, before the priests and the judges who are in those days,