shadow:
An insignificant, illiterate, itinerant preacher with a tiny following, who went wholly unnoticed by any literate person in Judaea somehow started a religion that changed the world.
Yes, it is indeed very interesting. I am just now listening to a podcast on the first world war; did you know that the assasination attempt on Franz Ferdinand first failed and it was only by a series of coincidences the would-be assasin later that day came near Ferdinand when his car accidently stalled outside the bar where the assasin was eating a sandwhich? We could aks the same question: how did an insignificant serbian nationalist who desided to eat a sandwhich somehow cause WW1 and WW2?
Jesus started a small religion like so many others; then by wild coincidences, and because the historical circumstances was correct, that religion grew (and changed properly beyond all recognition!) to take over the remains of the roman empire and here we are today.