14And God said, "Let there be lights in the expanse 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 expanse 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—and the stars. 17And God set them in the expanse of the heavens to give light on 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. 19And there was evening and there was morning, the fourth day.
2He answered them, "When it is evening, you say, 'It will be fair weather, for the sky is red.' 3And in the morning, 'It will be stormy today, for the sky is red and threatening.'