Revelation 16:10-13

10Then the fifth angel poured out his bowl on the throne of the beast so that darkness covered his kingdom, and people began to bite their tongues because of their pain.

11They blasphemed the God of heaven because of their sufferings and because of their sores, but nevertheless they still refused to repent of their deeds.

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

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