Reason Jesus must have been a real person

[Fake Messiah]

But I was explaining to someone about the Isaiah prophecy regarding the virgin birth, and how it is mistranslated.  But then I realized that the same prophecy uses "Immanuel" not Jesus.  The point being - if the gospel writer of Matthew was willing to fabricate the virgin birth based on a prophecy, why didn't he ALSO change the name of Jesus to Immanuel?  Maybe because he based it so much on Mark, and Mark was already out there?  Maybe he was only willing to make minor corrections, or add new parts of the story?

Well, first of all, Jewish messiah was not supposed to be from the virgin birth but human. But considering that Jesus failed to fulfill the "prophecies" from OT that describe messiah (like great military leader, who will win battles for Israel; restoring Jerusalem; rebuilding the Temple; bring world peace etc.) it seems that further writers decided to exaggerate more and more on a success story of "Mark" - religion is always a good business and this Jesus thing caught on so there needed to be produced more stories about him and hence the virgin birth and by John Jesus is creator of the universe himself. I mean you would wonder how previous writers managed to skip that part about creating of the universe.

So there you go. There wasn't one point when Christianity was invented but rather it was invented many times, like when Paul was making his Jesus' stories; when Mark was written and then every time new gospel was being written; then during councils in Nicaea; then when Martin Luther created Protestantism; John Smith Mormons; Jehovah's witness; and every day someone creates new Christianity like televangelism because religion is still a good business - just visit Vatican.

Now, why did some Jews accepted Jesus story when Mark was written? During those times it was probably the biggest crisis in Judaism with temple being demolished and Judeo-Roman wars leaving people with their families slaughtered and homes burned down that it was probably comforting to believe that some Super Jew is around the corner to kill all Romans, avenge them and bring them to some better place in heaven.