And God said,
Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for seasons, and for days, and years:
All Commentaries on Genesis 1:14 Go To Genesis 1
John of Damascus
AD 749
Fire is one of the four elements. It is light and more buoyant than the others, and it both burns and gives light. It was made by the Creator on the first day, for sacred Scripture says, “And God said: Be light made. And light was made.” According to what some say, fire is the same thing as light…. And into the luminaries of the firmament the Creator put the primordial light, not that he was in want of any other light but that that particular light might not remain idle. For the luminary is not the light itself but its receptacle.