Revelation 16:12
And the sixth poured forth his vial upon the great river Euphrates; and its water was dried up, that a way might be prepared for the kings from the rising of the sun.
Revelation 9:14
saying to the sixth angel, who had the trumpet, Loose the four angels who are bound by the great river Euphrates.
Revelation 7:2
And I saw another angel ascending from the rising sun, having the seal of the living God: and he cried with a great voice to the four angels to whom power was given to injure the earth, and the sea;
Revelation 11:14
The second woe is past, and behold the third woe comes quickly.
Revelation 17:15
And he said to me, The waters which you saw, on which the harlot sat, are people, and multitudes, and nations, and tongues.