And let them be for lights in the firmament
of the heaven to give light upon the earth:
and it was so.
All Commentaries on Genesis 1:15 Go To Genesis 1
Thomas Aquinas
AD 1274
Let them shine in the firmament and give life to the earth: The lights are of service to man, in regard to sight, which directs him in his works, and is most useful for perceiving objects.