-Reincarnation is a concept that after biological death, the soul can begin a new life in a new body. The word "can" is important, since some think that it is not required for the soul to do so.
-But in my personal opinion most Near-Death Experiences are simply delusions that happens as the brain shuts down.
-Divinity is simply "the state or quality of being divine" and Divine is "of, from, or like God or a god". So I would not say it is required for stuff like that to be near the highest levels of the astral plane, but it is likely.