Revelation 16:13-14

13Then I saw three bad spirits that looked like frogs. One bad spirit came out of the dragon's mouth. Another one came out of the first wild animal's mouth. The third one came out of the false prophet's mouth.

14Those bad spirits are the spirits of demons. They had the power to do miracles. They went to all the rulers in the whole world, to bring them together to fight in a big war. That war will happen on the great day of God, who has all power and authority.