Deuteronomy 17:6

The one condemned to die is to be executed on the testimony of two or three witnesses. No one is to be executed on the testimony of a single witness.

Numbers 35:30

“If anyone kills a person, the murderer is to be put to death based on the word of witnesses. But no one is to be put to death based on the testimony of one witness.

Deuteronomy 19:15

“One witness cannot establish any wrongdoing or sin against a person, whatever that person has done. A fact must be established by the testimony of two or three witnesses.

Matthew 18:16

But if he won’t listen, take one or two more with you, so that by the testimony of two or three witnesses every fact may be established.

2 Corinthians 13:1

This is the third time I am coming to you. Every fact must be established by the testimony of two or three witnesses.

1 Timothy 5:19

Don’t accept an accusation against an elder unless it is supported by two or three witnesses.

Hebrews 10:28

If anyone disregards Moses’ law, he dies without mercy, based on the testimony of two or three witnesses.

John 8:17-18

Even in your law it is written that the witness of two men is valid.

Treasury of Scripture Knowledge

Summary

At the mouth of two witnesses, or three witnesses, shall he that is worthy of death be put to death; but at the mouth of one witness he shall not be put to death.

Bible References

General references

Deuteronomy 19:15
“One witness cannot establish any wrongdoing or sin against a person, whatever that person has done. A fact must be established by the testimony of two or three witnesses.
Numbers 35:30
“If anyone kills a person, the murderer is to be put to death based on the word of witnesses. But no one is to be put to death based on the testimony of one witness.
Matthew 18:16
But if he won’t listen, take one or two more with you, so that by the testimony of two or three witnesses every fact may be established.
John 8:17
Even in your law it is written that the witness of two men is valid.
2 Corinthians 13:1
This is the third time I am coming to you. Every fact must be established by the testimony of two or three witnesses.
1 Timothy 5:19
Don’t accept an accusation against an elder unless it is supported by two or three witnesses.
Hebrews 10:28
If anyone disregards Moses’ law, he dies without mercy, based on the testimony of two or three witnesses.

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.