Ezequiel 1

Ezequiel 1:15

The wheels that lie beneath it signify the various periods of time in which all the component members of the world are constantly being whirled forward. Furthermore, feet have been given to these members that they may not always stand still but move on. All their limbs are studded with eyes because the works of God are to be contemplated with ever careful observation. And within their very bosom is a fire of glowing coals, to signify that this world is hastening to the fiery day of judgment or that all the works of God are fiery and not obscure. — ON THE TRINITY 8:8-9