What causes religious hallucinations?

Some people recall walking with god, or seeing Jesus with them. What in the brain causes these kinds of scary hallucinations? I have never heard voices, or had any hallucinations before. I'm looking for a scientific answer, not some useless religious one. (but this will get more attention in this... show more Some people recall walking with god, or seeing Jesus with them. What in the brain
causes these kinds of scary hallucinations?

I have never heard voices, or had any hallucinations before.

I'm looking for a scientific answer, not some useless religious one. (but this will get more attention in this category)
Thanks
13 answers 13