Ezekiel 10:1

So He drove the man out; and at the east of the garden of Eden He stationed the cherubim and the flaming sword which turned every direction to guard the way to the tree of life.

and they saw the God of Israel; and under His feet there appeared to be a pavement of sapphire, as clear as the sky itself.

Now over the heads of the living creatures there was something with the likeness of an expanse, like the awesome gleam of crystal, spread out over their heads above.

And there came a sound from above the expanse that was over their heads; whenever they stood still, they dropped their wings.

Now above the expanse that was over their heads there was something in the likeness of a throne, like sapphire stone in appearance; and upon the likeness of the throne, high up, was the likeness of one with the appearance of a man.

Vision of Yahweh’s Glory Departing the Temple