Then I was given a measuring rod, which was like a pole. And I was told, “Get up and measure God's temple, the altar, and those who worship there.
References for Revelation 11:1
But don't measure the court outside the temple. Leave that out, because it has been given to the nations, and they will trample the holy city underfoot for forty-two months.
“And I will allow my two witnesses to prophesy for one thousand two hundred sixty days, wearing mourning clothes.
These are the two olive trees and the two lampstands that stand before the Lord of the earth.
If anyone wants to hurt them, fire comes out of their mouth and burns up their enemies. So if anyone wants to hurt them, they have to be killed in this way.
They have the power to close up the sky so that no rain will fall for as long as they prophesy. They also have power over the waters, to turn them into blood, and to strike the earth with any plague, as often as they wish.