Really? The only sex-related "boundary" I remember reading about being connected with the Garden of Eden was "if you're ashamed of your naked junk, it's a dead giveaway that you've been eating fruit off the Smart Tree."
In fact, the only notable sex-related story from the book of Genesis that sticks in my mind is the story of Onan, who was killed for pulling his dick out right before he came. The take-home lesson here being, "if you're gonna fuck your dead brother's wife, for God's sake make sure you knock her up!"
Most of the boundaries were erected (yuk yuk) in the book of Leviticus.
Good idea. It's pretty plain that God approves of polygyny. Polyandry, not so much.
The irony is that I added that in as an afterthought to my main point of Pain of Childbirth Greatly Increased as penalty for eating Smart Fruit, but please continue.
You know why Baptists never have sex standing up, right? Might lead to dancing.
There's a great scene in Like Water for Chocolate, where the protagonist, Pedro, is finally going have sex for the first time with his wife Rosaura, whom he doesn't love (he's in love with her little sister, Tita), right before dousing the lights and covering her with the matrimonial sheet (with lace-embroidered slit in the center), he prays to God to forgive him for what he's about to do, and to assure God that it's not for lust or desire, but "to create a son to serve You".
That's the Catholic take on it, at least it was in Revolutionary Mexico. Note, by the way, that Pedro doesn't go through any of this when he fucks Tita.
All right, why do you think most heterosexual religious people from any sect or denomination is so down on gay marriage in particular, or gay people in general? Is it primarily:
A. Because homosexuality is condemned as an abomination in the Bible and thus shouldn't be tolerated;
B. Because homosexuality does not promote procreation, and only procreative sex between married couples is of value to society;
C. Because homosexuality in general and gay marriage in particular will, if allowed to gain acceptance in society, undermine the legitimacy of heterosexuality and heterosexual marriage; or
D. Because the idea of a man sticking his wiener in another man's butthole is icky.