Genesis 1:5-7

Amplified Bible, Classic Edition

⁵ And God called the light Day, and the darkness He called Night. And there was evening and there was morning, one day.

⁶ And God said, Let there be a firmament [the expanse of the sky] in the midst of the waters, and let it separate the waters [below] from the waters [above].

⁷ And God made the firmament [the expanse] and separated the waters which were under the expanse from the waters which were above the expanse. And it was so.