Again we don't have the proper evidence to say he existed, but this isn't a topic discussing the historicity of Jesus. Christians would have to use outside sources that match up to the events, and to the Bible if they want to put forth that claim. The best outside source we have outside the Bible is Tacitus who appeared far later than Jesus, and only mentions some guy Christus. Where Christians get there name. Tacitus does not prove Jesus or Christianity Jesus.

Also shared in a belief is sketchy because Paul and Peter faught all the time.

Is Christians claim their book, teachings, Jesus, GOD, ect is correct then they must prove it.