Revelation 16:10-13

10And the fifth angel poured out his bowl on the throne of the beast, and its kingdom was plunged into darkness, and men began to gnaw their tongues in anguish 11and curse the God of heaven for their pains and sores. Yet they did not repent of their deeds.

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

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