John 8:17

And in your law too it is written that the testimony of two men is true:

Deuteronomy 17:6

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

Matthew 18:16

But if he do not hear thee, take with thee one or two besides, that every matter may stand upon the word of two witnesses or of three.

Deuteronomy 19:15

One witness shall not rise up against a man for any iniquity, and for any sin, in any sin that he sinneth: at the mouth of two witnesses, or at the mouth of three witnesses, shall a matter be established.

1 Kings 21:10

and set two men, sons of Belial, before him, and they shall bear witness against him saying, Thou didst curse God and the king; and carry him out, and stone him, that he may die.

John 10:34

Jesus answered them, Is it not written in your law, I said, Ye are gods?

John 15:25

But that the word written in their law might be fulfilled, They hated me without a cause.

2 Corinthians 13:1

This third time I am coming to you. In the mouth of two or three witnesses shall every matter be established.

Galatians 3:24

So that the law has been our tutor up to Christ, that we might be justified on the principle of faith.

Galatians 4:21

Tell me, ye who are desirous of being under law, do ye not listen to the law?

Hebrews 10:28

Any one that has disregarded Moses' law dies without mercy on the testimony of two or three witnesses:

1 John 5:9

If we receive the witness of men, the witness of God is greater. For this is the witness of God which he has witnessed concerning his Son.

Revelation 11:3

And I will give power to my two witnesses, and they shall prophesy a thousand two hundred and sixty days, clothed in sackcloth.

Treasury of Scripture Knowledge

Bible References

Also

John 10:34
Jesus answered them, Is it not written in your law, I said, Ye are gods?
John 15:25
But that the word written in their law might be fulfilled, They hated me without a cause.
Galatians 3:24
So that the law has been our tutor up to Christ, that we might be justified on the principle of faith.
Galatians 4:21
Tell me, ye who are desirous of being under law, do ye not listen to the law?

That

Deuteronomy 17:6
At the mouth of two witnesses, or three witnesses, shall he that is to die be put to death: he shall not be put to death at the mouth of one witness.
Deuteronomy 19:15
One witness shall not rise up against a man for any iniquity, and for any sin, in any sin that he sinneth: at the mouth of two witnesses, or at the mouth of three witnesses, shall a matter be established.
1 Kings 21:10
and set two men, sons of Belial, before him, and they shall bear witness against him saying, Thou didst curse God and the king; and carry him out, and stone him, that he may die.
Matthew 18:16
But if he do not hear thee, take with thee one or two besides, that every matter may stand upon the word of two witnesses or of three.
2 Corinthians 13:1
This third time I am coming to you. In the mouth of two or three witnesses shall every matter be established.
Hebrews 10:28
Any one that has disregarded Moses' law dies without mercy on the testimony of two or three witnesses:
1 John 5:9
If we receive the witness of men, the witness of God is greater. For this is the witness of God which he has witnessed concerning his Son.
Revelation 11:3
And I will give power to my two witnesses, and they shall prophesy a thousand two hundred and sixty days, clothed in sackcloth.

General references

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 17:6
At the mouth of two witnesses, or three witnesses, shall he that is to die be put to death: he shall not be put to death at the mouth of one witness.