Unfortunately, there isn't much historical evidence that the leader of your supposed cult actually existed at all. He is supposed to have riled the Romans big time, but there isn't a single completely convincing mention of him in contemporary Roman writings, of which there are many, just a handful of hazy references to a chap who might or might not have been Jesus. Still, it makes a good yarn, and it must be true because it's in the bible, and the Bible SAYS it's true... However, somebody started it and it was found disagreeable by many, and it got a few chaps into big terminal trouble. But that isn't enough for us to call it a cult.