Revelation 9:13-16

13And the sixth angel sounded, and I heard a voice from the four horns of the golden altar which is before God, 14Saying to the sixth angel who had the trumpet, Loose the four angels who are bound in the great river Euphrates. 15And the four angels were loosed, who were prepared for an hour, and a day, and a month, and a year, to slay the third part of men.1 16And the number of the army of the horsemen was two hundred thousand thousand: and I heard the number of them.