Revelation 16:12-14

12The sixth angel poured out his bowl on the great river Euphrates, and its water was dried up, to prepare the way for the kings from the east.

13And I saw, coming out of the mouth of the dragon and out of the mouth of the beast and out of the mouth of the false prophet, three unclean spirits like frogs.

14For they are demonic spirits, performing signs, who go abroad to the kings of the whole world, to assemble them for battle on the great day of God the Almighty.