Numbers 35:30

35:30 “Whoever kills any person, the murderer must be put to death by the testimony of witnesses; but one witness cannot testify against any person to cause him to be put to death.

Deuteronomy 17:6

17:6 At the testimony of two or three witnesses they must be executed. They cannot be put to death on the testimony of only one witness.

Deuteronomy 19:15

19:15 A single witness may not testify against another person for any trespass or sin that he commits. A matter may be legally established only on the testimony of two or three witnesses.

Deuteronomy 19:1

Laws Concerning Manslaughter

19:1 When the Lord your God destroys the nations whose land he is about to give you and you dispossess them and settle in their cities and houses,

Deuteronomy 21:10

Laws Concerning Wives

21:10 When you go out to do battle with your enemies and the Lord your God allows you to prevail and you take prisoners,

Deuteronomy 21:13

21:13 discard the clothing she was wearing when captured, and stay in your house, lamenting for her father and mother for a full month. After that you may have sexual relations with her and become her husband and she your wife.

Matthew 18:16

18:16 But if he does not listen, take one or two others with you, so that at the testimony of two or three witnesses every matter may be established.

Matthew 26:60-61

26:60 But they did not find anything, though many false witnesses came forward. Finally two came forward 26:61 and declared, “This man said, ‘I am able to destroy the temple of God and rebuild it in three days.’”

John 8:17-18

8:17 It is written in your law that the testimony of two men is true. 8:18 I testify about myself and the Father who sent me testifies about me.”

Hebrews 10:28-29

10:28 Someone who rejected the law of Moses was put to death without mercy on the testimony of two or three witnesses. 10:29 How much greater punishment do you think that person deserves who has contempt for the Son of God, and profanes the blood of the covenant that made him holy, and insults the Spirit of grace?