Deuteronomy 13:14
then shalt thou inquire, and make search, and ask diligently; and if it be truth, and the thing be certain, that this abomination hath happened in the midst of thee,
Deuteronomy 17:4
and it be told thee, and thou hearest of it; then thou shalt make thorough inquiry, and if it be truth and the thing be certain, that this abomination hath been wrought in Israel,
Numbers 35:30
Whoever shall smite a person mortally, at the mouth of witnesses shall the murderer be put to death; but one witness shall not testify against a person to cause him to die.
Deuteronomy 10:18
who executeth the judgment of the fatherless and the widow, and loveth the stranger, to give him food and clothing.
Isaiah 11:3-4
And his delight will be in the fear of Jehovah; and he shall not judge after the sight of his eyes, neither reprove after the hearing of his ears;
John 7:24
Judge not according to sight, but judge righteous judgment.
1 Timothy 5:19
Against an elder receive not an accusation unless where there are two or three witnesses.