I am a little surprised that Christians don't find the idea that there was an early Jewish Christian Church that was theologically different from the later Paul derived church. troubling. Of course, I don't think most Christians are aware of this possibility or the idea that their relgion was something that was created not by Jesus but by the people, mostly gentile, that came after him. Still, some Christians must be and of those that are what do they think about this?
Speaking as a Catholic, we believe in a sort of directed theological evolution so this isn't problematic. Jesus didn't write the New Testament, he didn't codify the Church, he left that up to us.
Certainly the Jewish Christians and the gentile Christians approached...I guess you could say...the same stuff from different perspectives. It's sensible to appreciate that, and, it is vitally important to understand that Christ would be proclaimed as a universal savior, and not just a Jewish Messiah, a better selling point if you're to take seriously Christ's commission to spread the good news throughout the world.
-Elliot