The fire — This fire stood not still, but as the Hebrew is, Made itself walk up and down. It moved itself, which is too much to ascribe to creatures: God only moved all these living creatures.
Related Commentaries of Ezekiel 1:13
Ezekiel 1:13
13 As for the likeness of the living creatures, their appearance was like burning coals of fire, and like the appearance of lamps: it went up and down among the living creatures; and the fire was bright, and out of the fire went forth lightning.