Genesis 1:6-9

ASV(i) 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 the firmament, and divided the waters which were under the firmament from the waters which were above the firmament: and it was so. 8 And God called the firmament Heaven. And there was evening and there was morning, a second day.
9 And God said, Let the waters under the heavens be gathered together unto one place, and let the dry land appear: and it was so.