John 8:17

It is also written in your law, that the testimony of two men is true.

Deuteronomy 17:6

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

Matthew 18:16

But if he hear thee not, then take yet with thee one or two, that in the mouth of two or three witnesses, all things may be established.

Deuteronomy 19:15

One witness shall not rise against a man in any manner trespass or sin, whatsoever sin a man sinneth: But at the mouth of two witnesses or of three witnesses shall all matters be tried.

1 Kings 21:10

and set two unthrifties before him, and let them testify against him, saying, 'Thou didst curse both God and the king.' And upon that carry him out and stone him to death."

John 10:34

Jesus answered them, "Is it not written in your law, 'I have say ye are gods?'

John 15:25

Even that the saying might be fulfilled that is written in their law, 'They hated me without a cause.'

2 Corinthians 13:1

Now come I the third time unto you: "In the mouth of two or three witnesses shall everything stand."

Galatians 3:24

Wherefore the law was our schoolmaster unto the time of Christ, that we might be made righteous by faith.

Galatians 4:21

Tell me, ye that desire to be under the law: have ye not heard of the law?

Hebrews 10:28

He that despiseth Moses' law, dieth without mercy under 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, that God hath born of his son.

Revelation 11:3

"And I will give power unto my two witnesses, and they shall prophesy one 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 have say ye are gods?'
John 15:25
Even that the saying might be fulfilled that is written in their law, 'They hated me without a cause.'
Galatians 3:24
Wherefore the law was our schoolmaster unto the time of Christ, that we might be made righteous by faith.
Galatians 4:21
Tell me, ye that desire to be under the law: have ye not heard of the law?

That

Deuteronomy 17:6
At the mouth of two or three witnesses shall he that is worthy of death, die: but at the mouth of one witness he shall not die.
Deuteronomy 19:15
One witness shall not rise against a man in any manner trespass or sin, whatsoever sin a man sinneth: But at the mouth of two witnesses or of three witnesses shall all matters be tried.
1 Kings 21:10
and set two unthrifties before him, and let them testify against him, saying, 'Thou didst curse both God and the king.' And upon that carry him out and stone him to death."
Matthew 18:16
But if he hear thee not, then take yet with thee one or two, that in the mouth of two or three witnesses, all things may be established.
2 Corinthians 13:1
Now come I the third time unto you: "In the mouth of two or three witnesses shall everything stand."
Hebrews 10:28
He that despiseth Moses' law, dieth without mercy under 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, that God hath born of his son.
Revelation 11:3
"And I will give power unto my two witnesses, and they shall prophesy one thousand two hundred and sixty days, clothed in sackcloth."

General references

Numbers 35:30
Whosoever slayeth, shall be slain at the mouth of witnesses. For one witness shall not answer against one person to put him to death.
Deuteronomy 17:6
At the mouth of two or three witnesses shall he that is worthy of death, die: but at the mouth of one witness he shall not die.