Revelation 9:13

In context

11As king over them they have the angel of the abyss, whose name in Hebrew is Abaddon, and in Greek his name is Apollyon. 12The first woe has passed. Look, two more woes are still to come after this. 13The sixth angel sounded his trumpet, and I heard a single voice coming from the horns of the golden altar that is before God, 14saying to the sixth angel who held the trumpet, “Release the four angels who are bound at the great river Euphrates.” 15So the four angels who had been kept ready for this hour and day and month and year were released, to kill a third of humanity.