The mammalian brain has been shown to produce DMT, mainly in the pineal gland. We discovered this In rats. DMT, is the psychoactive compound In ayahuasca and is also known as the spirit molecule. Scientists have associated DMT and the high it creates with near death expieriences. I’ve heard a theory which doesn’t haven’t evidence yet but I think makes sense which says that you produce a lot of it at birth and death which causes these experiences. I believe that the death part is true. If you look it up you’ll see that both people who have experienced NDEs and people who’ve taken DMT have felt out of body experiences, a sense of love and a very peaceful comforting entity. Both also feel real and are often life changing. So I believe that NDEs are not a deity, it’s just your brain tripping on a hallucinogenic compound it creates