Ah the firmament. The supposed dome or "bowl".
“You are the light of the world. A town built on a hill cannot be hidden. Neither do people light a lamp and put it under a bowl. Instead they put it on its stand, and it gives light to everyone in the house." - Matthew 5:14-15
The FIRMAMENT separates the "waters above" from the "waters below".
Revelation 17:15 tells you the "waters" WHERE THE PROSTITUTE SITS, stands for people, multitudes, nations, and languages.
"And he said unto them, Unto you it is given to know the mystery of the kingdom of God: but unto them that are without, ALL THESE THINGS ARE DONE IN PARABLES: That seeing they may see, and not perceive; and hearing they may hear, and not understand; lest at any time they should be converted, and their sins should be forgiven them."