Revelation 9:13-16

13And the sixth angel sounded [his] trumpet: and I heard a voice from the four horns of the golden altar which [is] before 1God,

14saying to the sixth angel that had the trumpet, Loose the four angels which are bound at the great river Euphrates.

15And the four angels were loosed, who are prepared for the hour and day and month and year, that they might slay the third part of men;

16and the number of the hosts of horse [was] twice ten thousand times ten thousand. I heard their number.