User blog comment:FTWinchester/Eve Mother of All and Biblical Eve Parallels/@comment-4945263-20121110023451

I must say is ver interesting theory and well documented information, I never really thought of a Leviathan as being the show version of Adam, but is possible since Edgar refers to Eve as hardly one of them.

Is possible that Purgatory is some sort of a blueprint of Earth, hence you Garden of Eden theory would be correct, and there is were God put the first humans, Adam and Eve (and possibly Lilith) for a test drive and they where tempted by the serpent (the Leviathans, remembers in the Bible they are refered as monstrous snaked) and became the first monsters.