Revelation 11:3 in the King James Version
And I will give power unto my two witnesses, and they shall prophesy a thousand two hundred and threescore days, clothed in sackcloth.
Context
2 Leave out the court which is outside of the temple, and don’t measure it, for it has been given to the nations. They will tread the holy city under foot for forty-two months.
3 I will give power to my two witnesses, and they will prophesy one thousand two hundred sixty days, clothed in sackcloth.”
4 These are the two olive trees and the two lamp stands, standing before the Lord of the earth.