how many mentally ill people manage to persuade more than a handfull of people what they are saying is right? NONE! 2000 years ago why woudl that be any different, if anything back then, mentaly ill people would have been shunned from society even more so than they are today! Edit: The reason, the sole purpose of him coming to earth, was to die for everyones sins. He died for our sins so we could be forgiven.