It's simple. Reply with two glaring contradictions: 1. As some one already pointed out the book is FICTION! 2. The book also contends that Mary Magdaline(spelling?) was the wife of Jesus and a "goddess". While, at the same time claiming that Christ was not "diefied" until the second century by Constantine. How then is Mary a goddess if Jesus is not God. The idea is absurd in and of itself. If the book is true then there is no logical basis for Christainity and the apostles went to their death for a mere mortal. Which, ofcourse, makes no sense. As for the idea that early Christains constructed their churches with pagan symbols mixed into the designs of the buildings, it is, or should be irrelavant to an individuals personal relationship to Christ.correction: Sorry, Constantine was third to fourth century, not second.