Revelation 9:16-19

16I heard the size of their army, which was 200 million mounted troops.

17And in my vision, I saw the horses and the riders sitting on them. The riders wore armor that was fiery red and dark blue and yellow. The horses had heads like lions, and fire and smoke and burning sulfur billowed from their mouths.

18One-third of all the people on earth were killed by these three plagues—by the fire and smoke and burning sulfur that came from the mouths of the horses.

19Their power was in their mouths and in their tails. For their tails had heads like snakes, with the power to injure people.