Revelation 9:17; Revelation 9:18

17 The horses and riders I saw in my vision looked like this: Their breastplates were fiery red, dark blue, and yellow as sulfur. The heads of the horses resembled the heads of lions, and out of their mouths came fire, smoke and sulfur.

18 A third of mankind was killed by the three plagues of fire, smoke and sulfur that came out of their mouths.