Revelation 9:17-21

17And 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.

18By these three plagues a third of mankind was killed—by the fire and the smoke and the brimstone which came out of their mouths.

19For their power is in their mouth and in their tails; for their tails are like serpents, having heads; and with them they do harm.

20But the rest of mankind, who were not killed by these plagues, did not repent of the works of their hands, that they should not worship demons, and idols of gold, silver, brass, stone, and wood, which can neither see nor hear nor walk.

21And they did not repent of their murders or their sorceries or their sexual immorality or their thefts.