Terrifying look into how religion and belief can be twisted and used. In a religious belief system where everyone can and does talk directly to God and God can and does talk back, what happens when one person gets a message from God to kill and another person gets a message from God to not kill? Who's right? Who determines who's right?
I think it says a lot about critical thinking and thinking for oneself. An important lesson in today's world of instant news and no follow up.