Then God said, “Let there be an expanse in the midst of the waters, and let it divide between waters from waters.” Genesis 1:6.
As the earth increased in speed while spinning on its axis, the centrifugal force began to pull upon the waters. God then caused the waters to divide, forming the first heaven (Genesis 1:7). The earth was now encased in water, which will serve to filter the sunlight and produce a perfect greenhouse environment for biological life.