Revelation 9:16-18

American Standard Version

¹⁶ And the number of the armies of the horsemen was twice ten thousand times ten thousand: I heard the number of them. ¹⁷ And thus I saw the horses in the vision, and them that sat on them, having breastplates as of fire and of hyacinth and of brimstone: and the heads of the horses are as the heads of lions; and out of their mouths proceedeth fire and smoke and brimstone. ¹⁸ By these three plagues was the third part of men killed, by the fire and the smoke and the brimstone, which proceeded out of their mouths.