13. In the midst of the living creatures there was what looked like burning coals of fire, like torches moving to and fro among the living creatures; the fire was bright and out of the fire went forth lightning.
14. And the living creatures darted back and forth like a flash of lightning.
15. Now as I was still looking at the living creatures, I saw one wheel upon the ground beside each of the living creatures with its four faces.
16. As to the appearance of the wheels and their construction: in appearance they gleamed like chrysolite; and the four were formed alike, and their construction work was as it were a wheel within a wheel.