I think the Eastern religions might do ok. The writers of the quite ancient Upanishads seemed to have familiarity with states not so bound by time-space-causality. This was evident in their notions about identity. We ouselves have access to such states, its not so exotic, its the ordinary dream state. But we tend to deny the larger context. If the lucid dream state, OBEs and supposed spaces between lives are the same space it may be that our waking state is just a consensus dream.
Part of the way out of dream (aside from taking the perspective of others from the vantage point of you own perspective) may be to refuse the consensus assertions (beliefs) as Socrates did when he admitted to his dismay that he was the wisest in Athens because at least he knew that he didnt know.