Jezekiel 1:22

22 And the likeness over the heads of the living creatures was as a firmament, as the appearance of crystal, spread out over their wings above.

Jezekiel 1:22 In-Context

20 Wherever the cloud happened to be, there was the spirit ready to go: the wheels went and were lifted up with them; because the spirit of life was in the wheels.
21 When those went, went; and when those stood, stood; and when those lifted themselves off the earth, they were lifted off with them: for the spirit of life was in the wheels.
22 And the likeness over the heads of the living creatures was as a firmament, as the appearance of crystal, spread out over their wings above.
23 And their wings were spread out under the firmament, reaching one to the other; two to each, covering their bodies.
24 And I heard the sound of their wings when they went, as the sound of much water: and when they stood, their wings were let down.

The Brenton translation of the Septuagint is in the public domain.