OK, this one has totally blown my own mind. I puzzled over this one for ages and finally it just opened up like a flower. Or better yet, a clamshell.
Take careful notes, because this is PhD level codebreaking we're talking about here.
You probably all know the legend of the Fall, which starts with Adam and Eve living in cosmic bliss with God in the Garden of Eden. Everything's peachy until the Serpent (Satan, if you like) tempts Eve to eat of the fruit of the Tree of Knowledge of Good and Evil. That gets all their asses tossed out of Eden, condemned to toil on the Earth. The Gate to Eden is eternally guarded by Seraphim bouncers, and so here we all are.