The Bible: "Because of all your detestable idols, I will do to you what I have never done before and will never do again. Therefore in your midst parents will eat their children, and children will eat their parents. I will inflict punishment on you and will scatter all your survivors to the winds."
– God (Ezekiel 5:9-10)
Quote Source: The Bible
So, essentially, God is a sociopath prick who feels the need to create mass murder. Luckily, we have freedom of religion nowadays.