Genesis 1:18-20

Revised Standard Version Catholic Edition

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. ¹⁹ And there was evening and there was morning, a fourth day.

²⁰ And God said, “Let the waters bring forth swarms of living creatures, and let birds fly above the earth across the firmament of the heavens.”