17. God put the lights in the huge space of the sky to give light on the earth.
18. He put them there to rule over the day and the night. He put them there to separate light from darkness. God saw that it was good.
19. And there was evening, and there was morning. It was day four.
20. God said, "Let the waters be filled with living things. Let birds fly above the earth across the huge space of the sky."
21. So God created the great creatures of the ocean. He created every living and moving thing that fills the waters. He created all kinds of them. He created every kind of bird that flies. And God saw that it was good.
22. God blessed them. He said, "Have little ones and increase your numbers. Fill the water in the oceans. Let there be more and more birds on the earth."