Ezekiel 1:21-23

21 When those went, these went; when those stood, these stood. And when those were lifted up from the earth, the wheels were lifted up together with them, for the spirit of the living creatures was in the wheels.

22 And a likeness was over the heads of the living creatures, an expanse like the appearance of an awesome crystal, stretched out over their heads.

23 And under the expanse their wings were straight, one toward another. Each one had two which covered one side, and each one had two which covered the other side of the body.