Babylon ... is become the habitation of devils, and the hold of every foul spirit, and a cage of every unclean and hateful bird. Revelation 18:2
Trivia: What happened when the seventh vial of God's wrath was poured out (Rev 16)?
In the Bible, the firmament is a solid, dome-shaped structure in which the stars were placed. It separated the waters below from the waters above. Windows in the firmament were opened whenever it rained.