The gospels, scholars agree, were written after the destruction of the Second Temple in 70 CE. This catastrophic event, argues Donald Akenson, forever altered the outlook--and the agenda--of the Christian and Jewish faiths. Of all the New Testament writings, only Paul's letters were composed before 70 CE. Thus, Akenson says, they are the only direct evidence we have that is untainted by this profound and lasting shift in perspective. And yet this...