1 Timothy 5:19

Against an elder do not receive an accusation, unless there are two or three witnesses.

Deuteronomy 19:15

One witness shall not be valid against a man for any iniquity or for any sin, in any sin which he should commit. At the mouth of two witnesses or at the mouth of three witnesses, shall the matter be established.

Matthew 18:16

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.

Deuteronomy 17:6

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.

Deuteronomy 19:18-19

and the judges shall make diligent inquisition; and, behold, if the witness is a false witness and has testified falsely against his brother,

John 8:17

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

John 18:29

Pilate then went out unto them and said, What accusation bring ye against this man?

Acts 11:30

which they likewise did and sent it to the elders by the hands of Barnabas and Saul.

Acts 24:2-13

And when he was called forth, Tertullus began to accuse him, saying, Seeing that by thee we enjoy great peace and that very worthy deeds are done unto this nation by thy prudence,

Acts 25:16

To whom I answered, It is not the manner of the Romans to deliver any man to die, before the one who is accused is face to face with his accusers and is given license to answer for himself concerning the crime laid against him.

2 Corinthians 13:1

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

Titus 1:6

He who is blameless, the husband of one wife, having faithful children who can not be accused of dissoluteness, nor insubordinate.

Hebrews 10:28

He that despised the law of Moses died without mercy under two or three witnesses:

Treasury of Scripture Knowledge

Summary

Against an elder receive not an accusation, but before two or three witnesses.

Bible References

Receive

John 18:29
Pilate then went out unto them and said, What accusation bring ye against this man?
Acts 24:2
And when he was called forth, Tertullus began to accuse him, saying, Seeing that by thee we enjoy great peace and that very worthy deeds are done unto this nation by thy prudence,
Acts 25:16
To whom I answered, It is not the manner of the Romans to deliver any man to die, before the one who is accused is face to face with his accusers and is given license to answer for himself concerning the crime laid against him.
Titus 1:6
He who is blameless, the husband of one wife, having faithful children who can not be accused of dissoluteness, nor insubordinate.

Two

Deuteronomy 17:6
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.
Deuteronomy 19:15
One witness shall not be valid against a man for any iniquity or for any sin, in any sin which he should commit. At the mouth of two witnesses or at the mouth of three witnesses, shall the matter be established.
Matthew 18:16
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.
John 8:17
It is also written in your law that the testimony of two men is true.
2 Corinthians 13:1
This third time I am coming unto you. In the mouth of two or three witnesses shall every word be established.
Hebrews 10:28
He that despised the law of Moses died without mercy under two or three witnesses:

General references

Genesis 9:23
Then Shem and Japheth took a garment and laid it upon both their shoulders and went backward, and covered the nakedness of their father; and their faces were backward, and they did not see their father's nakedness.
Numbers 35:30
Whoever kills any person, the murderer shall be put to death by the mouth of witnesses, but one witness shall not testify against any person to cause him to die.
Deuteronomy 13:14
then shalt thou enquire and search and ask diligently; and, behold, if it is the truth and the thing certain that such abomination is wrought among you,
Deuteronomy 17:6
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.