When an establishment newspaper like the Washington Post questions the historical existence of Jesus, you know something's rather amiss with Christianity regarding the raison d'ete for said religion who mostly likely did not exist, thus posing a disquieting existential question for all Christians to ponder as we move ever closer to Xmas 2016.
The first problem we encounter when trying to discover more about the Historical Jesus is the lack of early sources. The earliest sources only reference the clearly fictional Christ of Faith. These early sources, compiled decades after the alleged events, all stem from Christian authors eager to promote Christianity – which gives us reason to question them. The authors of the Gospels fail to name themselves, describe their qualifications, or show any criticism with their foundational sources – which they also fail to identify. Filled with mythical and non-historical information, and heavily edited over time, the Gospels certainly should not convince critics to trust even the more mundane claims made therein.
The methods traditionally used to tease out rare nuggets of truth from the Gospels are dubious. The criterion of embarrassment says that if a section would be embarrassing for the author, it is more likely authentic. Unfortunately, given the diverse nature of Christianity and Judaism back then (things have not changed all that much), and the anonymity of the authors, it is impossible to determine what truly would be embarrassing or counter-intuitive, let alone if that might not serve some evangelistic purpose.
Click here to see BRT's rather detailed take on this most interesting question if you dare. :)