'Riders' in the Bible

And this was the appearance of the horses which I saw in my vision--and of their riders. The body-armour of the riders was red, blue and yellow; and the horses' heads were shaped like the heads of lions, while from their mouths there came fire and smoke and sulphur.

that you may feast on the flesh of kings and the flesh of generals and the flesh of mighty men, on the flesh of horses and their riders, and on the flesh of all mankind, whether they are free men or slaves, great men or small."