Revelation 16:12
And the sixth poured his bowl upon the great river, the River Euphrates, and its water was dried up so as to make ready the way for the kings that come from the sunrising.
Revelation 9:14
one saying to the sixth angel that had the trumpet, "Loose the four angels which are bound at the great river Euphrates."
Revelation 7:2
And I saw another angel ascend from the sunrising, having a seal of the living God; and he cried with a great voice to the four angels to whom it was given to injure the earth and the sea,
Revelation 11:14
"The second woe is passed; and there is a third woe soon to follow."
Revelation 17:15
And he also said to me. "The waters which you saw, on which the harlot takes her seat, are peoples and multitudes and nations and tongues.