FF. According to the Biblical accounts said a lot of great things and a few probably crazy things. Anti-establishment, anti-violence, and lots of his contemporaries hated him. Sounds like a libertarian, right guys?
Jesus obviously existed, but I don't think you can prove if he was the son of God or not. I wouldn't be surprised if theocratic governments added the religion stuff so that their people could conform to a set lf laws they thought would be better for them, while in reality Jesus was just a cool guy who went around talking about good things like love and whatnot.
There have definitely been attempts by government to shape Christianity into something that could enhance social order, going as far back as Constantine in the 4th century. This was done mostly through trying to stamp out certain beliefs that were considered heretical, rather than completely inventing something new.
But the New Testament, and all its claims about Jesus' divinity, was written by people who were not in control of governments, but were often persecuted by the political authorities. They were considered "atheists" in their day, since they opposed the worship of the Roman Empire's gods, and called Jesus Lord and Son of God instead of the Emperor. And the Christian religion was developing much of its basic form before any of the New Testament was even written down.