Deuteronomy 17:6
At the mouth of two witnesses, or three witnesses, shall he that is to die be put to death; at the mouth of one witness he shall not be put to death.
Numbers 35:30
Whoso killeth any person, the murderer shall be slain at the mouth of witnesses: but one witness shall not testify against any person that he die.
Deuteronomy 19:15
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 a matter be established.
Matthew 18:16
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.
2 Corinthians 13:1
This is the third time I am coming to you. At the mouth of two witnesses or three shall every word established.
1 Timothy 5:19
Against an elder receive not an accusation, except at the mouth of two or three witnesses.
Hebrews 10:28
A man that hath set at nought Moses law dieth without compassion on the word of two or three witnesses:
John 8:17-18
Yea and in your law it is written, that the witness of two men is true.