Perhaps you've heard of Dan Brown's The Da Vinci Code. This fictional thriller has captured the coveted number one sales ranking at Amazon.com, camped out for 32 weeks on the New York Times Best-Seller List, and inspired a one-hour ABC News special. Along the way, it has sparked debates about the legitimacy of Western and Christian History.

While the ABC News feature focused on Brown's fascination with an alleged marriage between Jesus and Mary Magdalene, The Da Vinci Code contains many more (equally dubious) claims about Christianity's historic origins and theological development. The central claim Brown's novel makes about Christianity is that "almost everything our fathers taught us about Christ is false." Why? Because of a single meeting of bishops in 325, at the city of Nicea in modern-day Turkey. There, argues Brown, church leaders who wanted to consolidate their power base (he calls this, anachronistically, "the Vatican" or "the Roman Catholic church") created a divine Christ and an infallible Scripture—both of them novelties that had never before existed among Christians.

Watershed at Nicea
Brown is right about one thing (and not much more). In the course of Christian History, few events loom larger than the Council of Nicea in 325. When the newly converted Roman Emperor Constantine called bishops from around the world to present-day Turkey, the church had reached a theological crossroads.

Led by an Alexandrian theologian named Arius, one school of thought argued that Jesus had undoubtedly been a remarkable leader, but he was not God in flesh. Arius proved an expert logician and master of extracting biblical proof texts that seemingly illustrated differences between Jesus and God, such as John 14:28: "the Father is ...