> Also without strong social incentives to believe, it becomes too hard to believe based only on the likelihood that it's actually true.

Can you clarify what you're trying to assert here please?

> The idea of divine, absolute laws of conduct and an un-gameable entity that enforces these laws sounds fantastical but it's very effective at getting people to cooperate once they've bought in ...

Would you be able to cite some examples of where this has happened in the past few millennia?