1. Veracity (character)
2. Bias (motive to lie)
3. Competence (ability to testify)
4. Conformity (with experience)
5. Coincidence (with outside factors)
6. Correspondence (with other testimony)
Jim: Now, if you can demonstrate, with proof (not imagination), that the
Gospel
writers fall short in each of these categories, you may have a case.
Of course that there existed a 'jesus' does not mean that this person was
actually the son of god.
Veracity of their accounts is hard to prove or disprove as is motive to
lie. Of course they had a compelling reason to lie if Jesus was not the
son of god. After all not only their belief but the faith of christianity
relied on this incident.
Coincidence cannot be used to show the supernatural part of the gospel
merely the historical nature of the account.
So while the gospel might provide with some interesting insight in the
historical events it cannot provide for evidence of the existance of a
supernatural person, at most it can show the existance of a person named
Jesus who influenced a lot of people with his teachings. But there are
plenty of examples of such persons.