At our church, every year or so, someone shows up and you can tell right away they're too intense, too challenging, too pushy in Sunday School. They tend to last about 4-6 months before they burn out and find another church to pester. But each time it happens, the thought crosses my mind if they're ill-adjusted enough to do something like this guy did.

So like I said, it's surprising to me that this doesn't happen in more churches. Church is where a lot of quote-unquote functional mentally ill people end up, sooner or later. (Which speaks well of churches.)