Revelation 11:3-6

3And I will give [power] to my two witnesses, and they shall prophesy a thousand two hundred [and] sixty days, clothed in sackcloth.

4These are the two olive trees and the two lamps which stand before the Lord of the earth;

5and if any one wills to injure them, fire goes out of their mouth, and devours their enemies. And if any one wills to injure them, thus must he be killed.

6These have power to shut the heaven that no rain may fall during the days of their prophecy; and they have power over the waters to turn them into blood, and to smite the earth as often as they will with every plague.