Ezekiel 1:13-15
13
As for the likeness of the living creatures, their appearance was like burning coals of fire, like the appearance of torches: [the fire] went up and down among the living creatures; and the fire was bright, and out of the fire went forth lightning.
14
The living creatures ran and returned as the appearance of a flash of lightning.
15
Now as I saw the living creatures, behold, one wheel on the earth beside the living creatures, for each of the four faces of it.