Revelation 11:7
And when they shall have finished their testimony, the beast that ascends out of the bottomless pit shall make war against them, and shall overcome them, and kill them.
Torrey's Topical Textbook—AKJV

Revelation 13:4,7
And they worshipped the dragon which gave power to the beast: and they worshipped the beast, saying, Who is like to the beast? who is able to make war with him?
Torrey's Topical Textbook—AKJV