Revelation 9:17-19

Wycliffe Bible

¹⁷ And so I saw horses in vision; and they that sat on them had fiery habergeons, and of jacinth, and of brimstone [and brimstone]. And the heads of the horses were as [the] heads of lions; and fire, and smoke, and brimstone, cometh forth of the mouth of them [and of the mouth of them fire came forth, and smoke and brimstone].

¹⁸ Of these three plagues the third part of men was slain, of the fire, and of the smoke, and of the brimstone, that came out of the mouth of them.

¹⁹ For the power of the horses is in the mouth of them, and in the tails of them; for the tails of them be like to serpents, having heads, and in them they harm.