Thematic Bible: The army of horsemen

And the number of the troops of the cavalry [was] {two hundred million}; I heard the number of them. And in this way I saw the horses in the vision, and those seated on them, who had fiery [red] and hyacinth-colored and sulphurous [yellow] breastplates, and the heads of the horses [were] like the heads of lions, and out of their mouths came fire and smoke and sulphur. By these three plagues a third of humanity was killed--by the fire and the smoke and the sulphur that came out of their mouths. read more.
For the power of the horses is in their mouths and in their tails, for their tails [are] similar in appearance to snakes, having heads, and with them they cause injury.