'Wheel' in the Bible

Now as I looked at the living beings, behold, there was one wheel on the earth beside the living beings, for each of the four of them.

The appearance of the wheels and their workmanship was like sparkling beryl, and all four of them had the same form, their appearance and workmanship being as if one wheel were within another.

It came about when He commanded the man clothed in linen, saying, “Take fire from between the whirling wheels, from between the cherubim,” he entered and stood beside a wheel.

Then I looked, and behold, four wheels beside the cherubim, one wheel beside each cherub; and the appearance of the wheels was like the gleam of a Tarshish stone.

As for their appearance, all four of them had the same likeness, as if one wheel were within another wheel.