Revelation 11:4-5

These [witnesses] are the two olive trees and the two lampstands which stand before the Lord of the earth. [Zech. 4:3, 11-14.] And if anyone attempts to injure them, fire pours from their mouth and consumes their enemies; if anyone should attempt to harm them, thus he is doomed to be slain. [II Kings 1:10; Jer. 5:14.]