So you think stable society requires a religion.
Given that a flavour of nihilism might be the true religion, there must be a true religion.
Existence is defined by interactions, which means it must be possible to learn the true religion. Theological epistemology must require a different attitude than our well-studied epistemologies, or we would have already learned it. I find it absurd to presume we've already done so: all other fields of knowledge develop step by step from imperfection to wisdom. Religion is at best stuck at imperfection, if not outright random guesses.
If ~nihilism is the true religion, your ambitions are done. Society will never be stable. Thus if you want to stabilize civilization and think you need a religion, you must assume there is a true religion.
Therefore the first thing to do is develop theological epistemology. (It is similarly necessary to assume it is possible to develop this epistemology.) It is not going to develop by accident, or it would have done so already. It must be developed intentionally and consciously.
I could presume to write that I've made a start on it, but you shouldn't believe me, so I won't. You must develop theological epistemology yourself, because nobody else who can do it is going to do it. That, or give up your ambitions. However necessary it is for civilization, nobody cares enough about civilization to provide it.