You know, something like this
http://en.wikipedia.org/wiki/Norse_cosmology would have been better than that image.
It's not a good idea to bring in anti-creationist agenda into a thread if it's off topic. Don't slip in personal feelings that aren't necessary.
Regardless, I do think that the religious faction in SnK is involved somehow, but probably not directly.
My theory is there are factions within the city that wants everyone else to be walled up. Perhaps so it's easier to control them.
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"Legitimacy is based on three things. First of all, the people who are asked to obey authority have to feel like they have a voice—that if they speak up, they will be heard. Second, the law has to be predictable. There has to be a reasonable expectation that the rules tomorrow are going to be roughly the same as the rules today. And third, the authority has to be fair. It can’t treat one group differently from another.” Malcolm Gladwell