Sing unto God, extol Him that rideth upon the heavens, whose name is the Lord. Psalm 68:4
Genesis 1:6-8
6 And God said, “Let there be a firmament in the midst of the waters, and let it divide the waters from the waters.”
7 And 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.
8 And God called the firmament Heaven. And the evening and the morning were the second day.