Genesis 1:14-18

¹⁴And God said, "Let there be lights in the firmament of the heavens to separate the day from the night; and let them be for signs and for seasons and for days and years, ¹⁵and let them be lights in the firmament of the heavens to give light upon the earth." And it was so. ¹⁶And 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. ¹⁷And God set them in the firmament of the heavens to give light upon the earth, ¹⁸to rule over the day and over the night, and to separate the light from the darkness. And God saw that it was good.