I think its important to note though, that its generally advised against to practice meditation outside of establishing a foundation in virtue/morality. Not that that is stopping anyone (past self included). I would argue that the religious texts are extremely important in grounding the meditation practice in that way. It's very easy to ascribe all kinds of super-natural ideas and beliefs to the stages of insight and the 'ego-death' at the end of those. In the end, its still you, with your perspective, your ideas, your wrongs and rights. Accepting that is the true jewel, in my eyes.