Ezekiel 1:14-16

New Revised Standard Version Catholic Edition

¹⁴ The living creatures darted to and fro, like a flash of lightning.

¹⁵ As I looked at the living creatures, I saw a wheel on the earth beside the living creatures, one for each of the four of them.^{[a] 16} As for the appearance of the wheels and their construction: their appearance was like the gleaming of beryl; and the four had the same form, their construction being something like a wheel within a wheel.