Revelation 9:13-21 New American Bible (Revised Edition) (NABRE)
13 Then the sixth angel blew his trumpet, and I heard a voice coming from the [four][a] horns of the gold altar before God, 14 telling the sixth angel who held the trumpet, “Release the four angels[b] who are bound at the banks of the great river Euphrates.” 15 So the four angels were released, who were prepared for this hour, day, month, and year to kill a third of the human race. 16 The number of cavalry troops was two hundred million; I heard their number. 17 Now in my vision this is how I saw the horses and their riders. They wore red, blue, and yellow breastplates,[c] and the horses’ heads were like heads of lions, and out of their mouths came fire, smoke, and sulfur. 18 By these three plagues of fire, smoke, and sulfur that came out of their mouths a third of the human race was killed. 19 For the power of the horses is in their mouths and in their tails; for their tails are like snakes, with heads that inflict harm.
20 The rest of the human race, who were not killed by these plagues, did not repent of the works of their hands,[d] to give up the worship of demons and idols made from gold, silver, bronze, stone, and wood, which cannot see or hear or walk. 21 Nor did they repent of their murders, their magic potions, their unchastity, or their robberies.