Bereshis 1:6-8

Orthodox Jewish Bible

⁶ And Elohim said, Let there be a raki’a (expanse, dome, firmament) in the midst of the mayim (waters), and let it divide the mayim from the mayim.

⁷ And Elohim made the raki’a, and divided the waters under the raki’a from the waters which were above the raki’a; and it was so.

⁸ And Elohim called the raki’a Shomayim (Heaven). And the erev and the boker were Yom Sheni (Day Two, the Second Day).