2 Corinthians

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.

One witness shall not rise up against a man for any iniquity, or for any sin, in any sin that he sinneth: at the mouth of two witnesses, or at the mouth of three witnesses, shall the matter be established.

At the mouth of two witnesses, or three witnesses, shall he that is worthy of death be put to death; but at the mouth of one witness he shall not be put to death.

It is also written in your law, that the testimony of two men is true.

I am one that bear witness of myself, and the Father that sent me beareth witness of me.