I don't think so. People can be manipulative, want to subdue the out-group, seek to have strong internal cohesion etc. also without reference to a revered text.
A revered text can, however, codify those attitudes and people swearing by that text can feel relieved of the responsibility for the creation of their particular morality.
I think it's not quite relief of that particular responsibility, but an emotional attachment to the ritual, the vibe, whatever... just whatever "place in the heart" it finds in believers. Certainly for many relief of the responsibilty of creating morals is nice and all, but I'd guess many people just don't have the idea of morals as something they could be responsible for like that. It's just not like that to them, regardless of how logically valid it might be. Why bother when those offered by religion seem to work?
And if you wanted to pick out one thing that might motivate people to adopt a popular religion, the relief of authoring morals is directly related to the authority they gain for having adopted something that can't be questioned. That's pretty powerful right there.
I was speaking to a guy the other day who was a christian who basically admitted a very skeptical world-view and noted that "god" was some cool acronym about direction or motivation or something. I really liked whatever he said but the damned thing wouldn't stick in my head.
He basically said it's just an idea that people can use to guide themselves towards some "good" and they see the stuff in the religion as resulting in good overall. I think many of them just don't bother to question the details because it's unimportant to them. They just care about the result as they see it "I was good". Kind of noble I think, from one angle, and weak on another. Seems like every damned thing has that sort of balanced deal, like that tsun tsu guy was talking about.
There's really no responsibility to create a morality if you find one already created that makes sense to you. *shrug* I guess I could have just said that without all the clutter. Oi!
Not for the so called populum. Personally, though, I think an abstractly formulated moral system is a necessity if one is to make progress toward a chosen goal. Otherwise, there is too much side-tracking.
How could a moral system not be abstractly formulated?
I have to say that I am enough of an idealist to refuse to think that all religions are apriori negative, oppressive institutions. Many are, of course, but not all.
I think they all have a dash of it, dependent upon the personalities, etc. Some people just suck (everyone.... sucks, to someone {sing}... and boy do they do all that sucking in different ways!), religion is somewhat incidental (luck of the draw most of the time, cultural and all). What else would our power seeking sub-population do than seek power? The church is a great place to exploit! Captured audiences RULE!
Pardon for the unnecesary expansions on your responses to G, I just felt like throwing in the two cents.