Why did they make him up?
Jewish-Roman historian Flavius Josephus makes account of him,"the brother of Jesus, who was called Christ, whose name was James". That is historical fact.
So who made up this man called Christ?
BTW I am Christian. I just wanted to ask it in an atheistic manner. This was a question I asked myself when I claimed to be an atheist.
It was one the main reasons I started believing in God at the time. How could Jesus become such a controversy. The Jews were only tolerated by the Romans. They could care less about the inner working of their religious lives except in matters that would cause unrest among the people. So the Romans didn't invent him to insight a cult following among there Semitic neighbors. And the Jews didn't invent him. They had him killed. So why would they bring up a messiah only to kill him. How could this man be such a force throughout history if the only people that were looking for him did not acknowledge him as messiah.