No, it's been pretty well documented that each of those books was written from 50 to 10-0 years after the fact. This is what Professor Ehrman is referring to when he calls tehm forgeries and frauds -- not that someone made them up, but forgeries by the standards of teh time, wherein they were attributed to people who were supposed eyewitnesses while being written by people half a century to a century after Jesus's time.
Yeah, I’ve seen alot of that stuff and am not impressed that much by their scholarship. I wouldn’t call it well documented. Most of their arguments are pontificating assertions and the ‘most likely he was...’ speculation, not logic based on facts.
A great deal spoke some greek Greek back then because it was the trade language, much like English today. He may have not had much education, but by today’s pathetic standards it’d probably be equal to college level.