Genesis 1:5-7
Genesis 1: 5 to 7
5 And God called the light Day and the darkness he called Night. And the evening and the morning were the first day.
6 And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters.
7 And God made a firmament and divided the waters which [were] under the firmament from the waters which [were] above the firmament; and it was so.