Revelation 16:12
And the sixth poured out his bowl upon the great river Euphrates; and his water was dried up, that the way of the kings who are from the rising of the sun may be prepared.
Revelation 9:14
saying to the sixth angel the one having the trumpet, Loose the four angels which have been bound at the great river Euphrates.
Revelation 7:2
And I saw another angel coming up from the rising of the sun, having the seal of the living God: and he cried with a great voice to the four angels, to whom it was given unto them to hurt the earth and the sea,
Revelation 11:14
The second Woe is passed; behold, the third woe comes quickly.
Revelation 17:15
And he says to me, The waters which you saw, where the harlot sits, are peoples, and multitudes, and nations, and tongues.