Ezekiel 1:15-17

15As I looked at the living creatures, I saw a wheel on the ground beside each creature with its four faces.

16This was the appearance and structure of the wheels: They sparkled like topaz, and all four looked alike. Each appeared to be made like a wheel intersecting a wheel.

17As they moved, they would go in any one of the four directions the creatures faced; the wheels did not change direction as the creatures went.