Revelation 11:4-6

These are the two olive trees and the two lampstands that stand before the Lord of the earth. If anyone wants to harm them, fire comes from their mouths and consumes their enemies; if anyone wants to harm them, he must be killed in this way. These men have the power to close up the sky so that it does not rain during the days of their prophecy. They also have power over the waters to turn them into blood and to strike the earth with every plague whenever they want.