Deuteronomy 13:14
You must thoroughly investigate and inquire if it is true that this detestable thing exists among you. If it is so,
Deuteronomy 17:4
When it is reported to you or you hear of it, then investigate it thoroughly. When the truth has been established that this detestable thing has been done in Israel,
Numbers 35:30
"Every murderer of a human being is to be executed only according to testimony given by multiple witnesses. A single witness is not to result in a death sentence.
Deuteronomy 10:18
He executes justice for the orphan and the widows, loves the foreigner, and gives them food and clothing."
Isaiah 11:3-4
His delight will be in the fear of the LORD. He won't judge by what his eyes see, nor decide disputes by what his ears hear,
John 7:24
Stop judging by appearances, but judge with righteous judgment!"
1 Timothy 5:19
Do not accept an accusation against an elder unless it is supported "by two or three witnesses."