Finally, Dr. Sungenis opened by citing St. Ambrose (debating against some adversary that I couldn't determine from the short citation itself), adversaries who we arguing that if the earth were still and the heavens moving around it, that the waters would flow down off the top of the sphere. They CLEARLY could not be talking about the LAND surface on which people dwell, since that would mean the water would directly contact the globe earth and that they would be submerged in water. It's absolutely clear that he was talking about the spherical FIRMAMENT that the waters would flow off of (or not, based on his argument).