Check it out here. Money quote:
Brayton called that interpretation "profoundly contrary to the historical record."
"John Jay, Alexander Hamilton and James Madison wrote the Federalist Papers to explain each and every provision of the Constitution to a population that was overwhelmingly Christian and convince them to vote for it. If they could have pointed to biblical sources for those provisions, that would have been a very powerful argument in favor of ratification. Yet not once is the Bible mentioned anywhere in those 85 essays. And not once, according to the notes of those in attendance, was the Bible ever referenced at the constitutional convention in Philadelphia to justify a concept or provision," according to Brayton.