Matthew 18:16

But if he does not listen, take along with you one or two others, so that every word may be confirmed by the testimony of two or three witnesses.

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] on the testimony or evidence of two or three witnesses shall a charge be confirmed.

John 8:17

Even in your own law it is written that the testimony of two persons is true [valid and admissible].

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.

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 17:6

On the evidence of two or three witnesses, he who is to die shall be put to death; he shall not be put to death on the evidence of [only] one witness.

1 Kings 21:13

Two worthless and unprincipled men came in and sat down opposite him; and they testified against Naboth before the people, saying, “Naboth cursed and renounced God and the king.” Then they brought him outside the city and stoned him to death.

1 John 5:7-8

For there are three witnesses:

Revelation 11:3

And I will grant authority to My two witnesses, and they will prophesy for twelve hundred and sixty days (forty-two months; three and one-half years), dressed in sackcloth.”

Treasury of Scripture Knowledge

Summary

But if he will not hear thee, then take with thee one or two more, that in the mouth of two or three witnesses every word may be established.

General references

Bible References

That in

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 17:6
On the evidence of two or three witnesses, he who is to die shall be put to death; he shall not be put to death on the evidence 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] on the testimony or evidence of two or three witnesses shall a charge be confirmed.
1 Kings 21:13
Two worthless and unprincipled men came in and sat down opposite him; and they testified against Naboth before the people, saying, “Naboth cursed and renounced God and the king.” Then they brought him outside the city and stoned him to death.
John 8:17
Even in your own law it is written that the testimony of two persons is true [valid and admissible].
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.
1 John 5:7
For there are three witnesses:
Revelation 11:3
And I will grant authority to My two witnesses, and they will prophesy for twelve hundred and sixty days (forty-two months; three and one-half years), dressed in sackcloth.”

General references

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 17:6
On the evidence of two or three witnesses, he who is to die shall be put to death; he shall not be put to death on the evidence of [only] one witness.