Genesis 1:14-16

And God said, Let there be lights in the firmament of heaven to divide the day from the night; and let them be for signs, and for seasons, and for days and years: and let them be for lights in the firmament of heaven to give light upon the earth: and it was so. And God made the two great lights; the greater light to rule the day, and the lesser light to rule the night: he made the stars also.