Genesis 1:6 in the King James Version
And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters.
Context
5 God called the light “day”, and the darkness he called “night”. There was evening and there was morning, the first day.
6 God said, “Let there be an expanse in the middle of the waters, and let it divide the waters from the waters.”
7 God made the expanse, and divided the waters which were under the expanse from the waters which were above the expanse; and it was so.