Revelation 16:10-12 English Standard Version Anglicised (ESVUK)
10 The fifth angel poured out his bowl on the throne of the beast, and its kingdom was plunged into darkness. People gnawed their tongues in anguish 11 and cursed the God of heaven for their pain and sores. They did not repent of their deeds.
12 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 from the east.