Cosmas Indicopleustes, on Gen 1:16

“And God made two great lights: a greater light to rule the day; and a lesser light to rule the night: and the stars.”

“For on the third day the fruits were produced, and in order again that it might not be supposed that they were produced by the influence of the sun, it was not until their creation was finished, that He made the sun and the moon and the stars. But whence did He make them? For it has been said that on the first day He made all things of nothing, but on the other days, out of things existing. Whence then the Sun? Why, out of the light created on the first day which the Architect modified at His pleasure and transformed into objects of varied aspects, creating, in the first place, the substance of the light, and then producing the luminaries, just as if one should bring forward a mass of gold, and should then coin it into pieces of money, and by so doing make it a thing of beauty. For just as He divided the abyss, which was then one mass of water, into the water on high, into seas, into rivers, into fountains, into lakes, into wells, so also did the Architect divide the light, which was a single uniform mass, and distribute it into the sun, into the moon and into the stars.”

Imported from an open dataset — not yet checked against the printed edition.