Genesis 1:6-9

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 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 God called the expanse heaven. And there was evening and there was morning, a second day. 9 Then God said, “Let the waters below the heavens be gathered into one place, and let the dry land appear”; and it was so.