Deuteronomy 17:4
and if it is reported and you hear about it, you must investigate it thoroughly. If the report is true and such an abomination has happened in Israel,

Deuteronomy 10:18
He executes justice for the fatherless and widow, and He loves the foreigner, giving him food and clothing.

Numbers 35:30
If anyone kills a person, the murderer is to be put to death on the testimony of multiple witnesses. But no one is to be put to death based on the testimony of a lone witness.

Isaiah 11:3, 4
And He will delight in the fear of the LORD. He will not judge by what His eyes see, and He will not decide by what His ears hear, . . .

John 7:24
Stop judging by outward appearances, and start judging justly."

1 Timothy 5:19
Do not entertain an accusation against an elder, except on the testimony of two or three witnesses.