And, of course, the Solar System, the Galaxies, the Galactic Clusters, and the universe are all “Wheels Within Wheels”.
Could it be that Ezekiel was given a vision of the Cosmos, way before Galileo, Copernicus, or even Carl (Billyons and Billyons) Sagan?
Visions of God i.e. of the Ein Sof (אין סוף). Which = 207 = ohr, light. :)
No shortage of concepts, is there. The light was named Day, so wherever "yom" appears, there is light. Even in (and especially in) the Day of the Lord.