Revelation:9:17-18
nkjv@Revelation:9:17 @ And thus I saw the horses in the vision: those who sat on them had breastplates of fiery red, hyacinth blue, and sulfur yellow; and the heads of the horses were like the heads of lions; and out of their mouths came fire, smoke, and brimstone.
nkjv@Revelation:9:18 @ By these three plagues a third of mankind was killed--by the fire and the smoke and the brimstone which came out of their mouths.