A belief is just a thought that's been picked up and held onto. Something arises in the mind... an idea about how things are, why things are, what's true, and instead of passing through the way most thoughts do, it gets grabbed and repeated. Over time, the repetition makes it feel solid, like a fact rather than a thought. That's all a belief ever is... a thought given a longer shelf life through habit.
People treat beliefs as though they're load bearing, as if losing one might cause something to collapse. That's because a belief usually comes bundled with a sense of "me" attached to it. "I believe this" quietly becomes "this belief is part of who I am," and defending the belief starts to feel like defending yourself. Look closely and the belief is still just a thought, appearing the same way any thought appears... arising, lingering, sometimes fading, sometimes getting replaced by a different one. Nothing about that process requires a self behind it, holding it in place.
This is why it doesn't actually matter whether a belief arises or not. Belief in God, belief in no-self, belief in fate, belief in nothing at all... these are all just content, showing up the same way clouds show up in the sky. What you are isn't built out of beliefs, so it isn't threatened by their absence and isn't completed by their presence. Awareness doesn't require a belief to function, and it doesn't stop functioning when a belief disappears.
Simple beliefs happen constantly, without anyone paying them any mind. Believing it'll probably rain later, believing the coffee needs another minute, believing the drive will take twenty minutes, believing a friend meant well by something they said... these are beliefs too, no different in kind from beliefs about God or self. Nobody treats them as spiritual problems to overcome. Nobody notices them arising at all, most of the time. So the idea that "enlightenment" would mean beliefs stop appearing is absurd... beliefs are just how the mind estimates and navigates, and that estimating doesn't stop. What stops is the assumption that a "someone" needs to get every belief right, or needs no beliefs at all, in order to be free.
The confusion comes from assuming beliefs need to be sorted into right and wrong before peace is possible... as if clarity depends on landing on the correct set of ideas. But clarity was never made of ideas in the first place. It's what's aware of the ideas, present before any belief shows up, present after it's dropped, completely unbothered by which one happens to be passing through right now. A belief can be strongly held or barely noticed, confidently stated or quietly doubted... none of that changes the simple fact of seeing, which doesn't depend on getting the content right.
So a belief can appear, that's fine... it can also not appear, that's fine too. Neither one reaches what's actually here. The relief isn't in finding the correct belief to finally settle on, it's in seeing that nothing was ever riding on it to begin with.