Religious and sexual and painful ecstasy aren't that different(I know, I should find something else to talk about, but there it is). The rather pornographic image of a suffering man together with a very real, ecstatic, sexual love rather than the abstract love of Judaism contributed to Christianity's great appeal. There is a reason why Jesus has such great abs in all statues and paintings.
Jesus died for your sins, look upon my six-pack and despair!
Resurrection just doesn't have that star-appeal Mel Gibson could make a movie out of. Not to mention there is also an element of guilt. God resurrected Jesus, but it was Man who killed him. Well, not Man, exactly, the Jews did, and here we have Set. Only instead of one man, the killers of this Dying God were the entire race of Jew-das Iscariot.
To answer your question, ravenest, it's all a question of marketing.
Of course, seen another way, although it would be in direct contrast to the rest of the book, based on this verse alone, this could be understood as the ecstasy of self-flagellation.
Read a certain way, what I've just written could lead to the gallows. Rest assured I have nothing against Christians, nor am I anti-semitic (although I'm allowed to be (; ).