Genesis 1:13-15

Revised Standard Version Catholic Edition

¹³ And there was evening and there was morning, a third day.

¹⁴ And 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, ¹⁵ and let them be lights in the firmament of the heavens to give light upon the earth.” And it was so.