Deuteronomy 13:14
then you shall inquire and make search and ask diligently. And behold, if it be true and certain that such an abomination has been done among you,
Deuteronomy 17:4
and it is told you and you hear of it, then you shall inquire diligently, and if it is true and certain that such an abomination has been done in Israel,
Numbers 35:30
"If anyone kills a person, the murderer shall be put to death on the evidence of witnesses. But no person shall be put to death on the testimony of one witness.
Deuteronomy 10:18
He executes justice for the fatherless and the widow, and loves the sojourner, giving him food and clothing.
Isaiah 11:3-4
And his delight shall be in the fear of the LORD. He shall not judge by what his eyes see, or decide disputes by what his ears hear,
John 7:24
Do not judge by appearances, but judge with right judgment."
1 Timothy 5:19
Do not admit a charge against an elder except on the evidence of two or three witnesses.