Revelation 11:3

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

Revelation 11:2

But the court which is outside the temple, omit, and do not measure that, for it has been given up to the Gentiles, and they shall tread under foot the Holy City for forty and two months.

Revelation 12:6

And the woman fled into the desert, where she has a place prepared by God, in which she is to be nourished for a thousand two hundred and threescore days.

Matthew 18:16

"But if he will not listen to you, take one or two others along, so that by the testimony of two or three witnesses every word may be established. If he will not listen to them, tell the church;

Luke 24:48

"You must bear testimony to this.

John 3:5-8

"I tell you solemnly," Jesus answered, "that unless a man is born of water and the Spirit, he cannot enter the kingdom of God.

John 3:27

In reply John said: "A man cannot obtain anything unless it has been granted to him from heaven.

John 15:27

"and you to shall bear witness because you have been with me from the first.

Acts 1:8

"yet you will receive power when the Holy Spirit comes upon you, and you are to be my witnesses both in Jerusalem and in all Judea, and in Samaria, and to the very ends of the earth."

Acts 2:32

This Jesus God has raised up, of this we are all witnesses.

Acts 3:15

"The Pioneer of Life you put to death. But God has raised him from the dead, and we are witnesses of that fact.

Acts 13:31

"For many days he was seen by those that came up with him from Galilee to Jerusalem, and are now his witnesses to the people.

1 Corinthians 12:28

And God has appointed those in the church to be first of all apostles, second, prophets, third, teachers. then workers of miracles, healers, helpers, administrators, users of various kinds of "tongues."

2 Corinthians 13:1

This will be my third visit to you. Out of the mouth of two or three witnesses shall every word be confirmed.

Ephesians 4:11

It is he who made some men apostles, some prophets, some evangelists, and some pastors and teachers,

Revelation 1:5

and from Jesus Christ, the faithful witness, the firstborn of the dead, and the Ruler of the kings of the earth. To Him who loves us and has loosed us from our sins in his own blood;

Revelation 13:5

And he was permitted to utter loud boasts and blasphemies; and there was given to him authority to continue forty-two months.

Revelation 19:10

And I fell down at his feet to worship him, and he said to me. "See that you do it not. I am a fellow slave of yours and of your brothers who hold the testimony of Jesus; for the testimony of Jesus is the vital breath of prophecy."

Revelation 20:4

And I saw thrones, and those who sat on them, and they were permitted to judge; and I saw the souls of those who had been beheaded for the testimony of Jesus, and for the Word of God, those who did not worship the beast nor his image, and who did not receive his brand upon their brow, or hands. And they lived and reigned with Christ for a thousand years.

Treasury of Scripture Knowledge

Summary

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

They shall

Clothed

General references

Bible References

I will give power, etc

John 3:27
In reply John said: "A man cannot obtain anything unless it has been granted to him from heaven.
1 Corinthians 12:28
And God has appointed those in the church to be first of all apostles, second, prophets, third, teachers. then workers of miracles, healers, helpers, administrators, users of various kinds of "tongues."
Ephesians 4:11
It is he who made some men apostles, some prophets, some evangelists, and some pastors and teachers,

Witnesses

Revelation 20:4
And I saw thrones, and those who sat on them, and they were permitted to judge; and I saw the souls of those who had been beheaded for the testimony of Jesus, and for the Word of God, those who did not worship the beast nor his image, and who did not receive his brand upon their brow, or hands. And they lived and reigned with Christ for a thousand years.
Luke 24:48
"You must bear testimony to this.
John 15:27
"and you to shall bear witness because you have been with me from the first.
Acts 1:8
"yet you will receive power when the Holy Spirit comes upon you, and you are to be my witnesses both in Jerusalem and in all Judea, and in Samaria, and to the very ends of the earth."
Acts 2:32
This Jesus God has raised up, of this we are all witnesses.
Acts 3:15
"The Pioneer of Life you put to death. But God has raised him from the dead, and we are witnesses of that fact.
Acts 13:31
"For many days he was seen by those that came up with him from Galilee to Jerusalem, and are now his witnesses to the people.

They shall

Revelation 19:10
And I fell down at his feet to worship him, and he said to me. "See that you do it not. I am a fellow slave of yours and of your brothers who hold the testimony of Jesus; for the testimony of Jesus is the vital breath of prophecy."

A thousand

Revelation 11:2
But the court which is outside the temple, omit, and do not measure that, for it has been given up to the Gentiles, and they shall tread under foot the Holy City for forty and two months.
Revelation 12:6
And the woman fled into the desert, where she has a place prepared by God, in which she is to be nourished for a thousand two hundred and threescore days.

Clothed

John 3:5
"I tell you solemnly," Jesus answered, "that unless a man is born of water and the Spirit, he cannot enter the kingdom of God.

General references

Romans 9:2
and incessant anguish in my heart.