Revelation 16:12
The sixth poured out his bowl on the great river Euphrates, and its waters were dried up to prepare the way for the kings from the east.
Revelation 9:14
telling the sixth angel with the trumpet, "Let loose the four angels who are bound at the great river Euphrates."
Revelation 7:2
And I saw another angel rise up from the east, with the seal of the living God; he shouted aloud to the four angels who were allowed to injure the earth and sea,
Revelation 11:14
The second woe has passed: the third woe soon is coming.
Revelation 17:15
He also told me, "The waters you saw, on which the woman is seated, are peoples and hosts, nations and tongues.