Revelation 16:10-12 World English Bible (WEB)
10 The fifth poured out his bowl on the throne of the beast, and his kingdom was darkened. They gnawed their tongues because of the pain, 11 and they blasphemed the God of heaven because of their pains and their sores. They still didn’t repent of their works.
12 The sixth poured out his bowl on the great river, the Euphrates. Its water was dried up, that the way might be prepared for the kings that come from the sunrise.