Matthew 18:16
But if he will not listen, take one or two others along, so that 'every matter may be established by the testimony of two or three witnesses.'

John 7:51
"Does our law convict a man without first hearing from him to determine what he has done?"

John 8:17
Even in your own Law it is written that the testimony of two men is valid.

John 8:18
I am One who testifies about Myself, and the Father, who sent Me, also testifies about Me."

Exodus 21:12
Whoever strikes and kills a man must surely be put to death.

Leviticus 24:17
And if a man takes the life of anyone else, he must surely be put to death.

Numbers 35:16
If, however, anyone strikes a person with an iron object and kills him, he is a murderer; the murderer must surely be put to death.

Numbers 35:31
You are not to accept a ransom for the life of a murderer who deserves to die; he must surely be put to death.

Deuteronomy 17:6
On the testimony of two or three witnesses a man shall be put to death, but he shall not be executed on the testimony of a lone witness.

Deuteronomy 19:15
A lone witness is not sufficient to establish any wrongdoing or sin against a man, regardless of what offense he may have committed. A matter must be established by the testimony of two or three witnesses.

Deuteronomy 27:24
Cursed is he who strikes down his neighbor in secret.' And let all the people say, 'Amen!'