JWL: Vic, if your "priors" are truly "priors" then they need to be there "prior."
So here you are wondering whether Christian theism is true. You were probably raised to believe in this Christian culture but now as the adult you have become you want to examine the case for yourself.
So when doing so what are your "priors" at that point? That is, what do you know and when? When do you place which "priors" into your bag of "priors"?
Name them in order to the best of your ability. And tell me how you arrived at them without using any subsequent ones.
VR: But the whole subjectivist theory of Bayesianism says that we best arrive at the truth if we conditionalize on the priors we have, since an arbitrary shift in priors won't be helpful in getting to the truth. If our priors are bad priors, then the evidence should move us off those priors to a more adequate belief system.
Bayesian subjectivism is a strongly anti-foundationalist theory of knowledge. I suppose it's a version of coherentism.