Genesis 1 7
So God made an expanse to divide the waters that were above from the waters that were below. And that's what happened.
Compare with other 3 random translations
GNV Genesis 1:7Then God made the firmament, and separated the waters, which were vnder the firmament, from the waters which were aboue the firmament: and it was so.
NLT Genesis 1:7And that is what happened. God made this space to separate the waters of the earth from the waters of the heavens.
NKJ Genesis 1:7Thus 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.