Genesis 1:6-8 ▼

6 Then God said, “Let there be an expanse in the midst of the waters, and let it separate the waters from the waters.”

7 So God made the expanse and separated the waters which were below the expanse from the waters which were above the expanse; and it was so.

8 And God called the expanse heaven. And there was evening and there was morning, a second day.