Deuteronomy 17:6
Numbers 35:30
‘If anyone kills a person [intentionally], the murderer shall be put to death on the testimony of [two or more] witnesses; but no one shall be put to death on the testimony of [only] one witness.
Deuteronomy 19:15
“A single witness shall not appear in a trial against a man for any wrong or any sin which he has committed; [only]
Matthew 18:16
2 Corinthians 13:1
This is the third time that I am visiting you. Every fact shall be sustained and confirmed by the testimony of two or three witnesses.
1 Timothy 5:19
Do not accept an accusation against an elder unless it is based on [the testimony of at least] two or three witnesses.
Hebrews 10:28
Anyone who has ignored and set aside the Law of Moses is put to death without mercy on the testimony of two or three witnesses.
John 8:17-18