Revelation 9:17-19

New King James Version

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; ^(A)and the heads of the horses were like the heads of lions; and out of their mouths came fire, smoke, and brimstone. 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. ¹⁹ For ^[a]their power is in their mouth and in their tails; ^(B)for their tails are like serpents, having heads; and with them they do harm.