This is why.....

...nobody knows for sure how many flavors of religion there really are, because anyone who can get enough followers, much like Facebook, can start their own.
Even if they wear really goofy baseball caps or have problems with authority. So at last count, there were over 4,200 all trying to pretend that theirs is the one true religion above and beyond all others, and God will get you for that if you don't believe them. And I haven't even mentioned all the fighting these 4,200 different gangs have caused, arguing over their differences.