Isaiah 21:7

And he saw; a short speech for he told me that he saw. A chariot, not for burden, but for war, in which chariots were then much used. With a couple of horsemen; attended with two horsemen. So there were both chariots and troops of horsemen. Or, with a couple of horses, as this word is sometimes used, as 1 Samuel 8:11 2 Samuel 1:6. The chariot was drawn with two horses. A chariot of asses, and a chariot of camels; two chariots, one drawn by asses, (under which title some understand mules, as being engendered of asses,) and the other by camels; whereby he signifies the variety and abundance of warlike provisions which the Medes and Persians should have for this expedition, and particularly of chariots, whereof some were for the carriage of necessary things, and others for the battle. He hearkened diligently; he carefully observed what he saw, and what he could further discover.