15. And let them be lights in the expanse of the sky to give light upon the earth. And it was so.
16. And God made the two great lights–the greater light (the sun) to rule the day and the lesser light (the moon) to rule the night. He also made the stars.
17. And God set them in the expanse of the heavens to give light upon the earth,
18. To rule over the day and over the night, and to separate the light from the darkness. And God saw that it was good (fitting, pleasant) and He approved it.
19. And there was evening and there was morning, a fourth day.
20. And God said, Let the waters bring forth abundantly and swarm with living creatures, and let birds fly over the earth in the open expanse of the heavens.
21. God created the great sea monsters and every living creature that moves, which the waters brought forth abundantly, according to their kinds, and every winged bird according to its kind. And God saw that it was good (suitable, admirable) and He approved it.