In the beginning was Diversity. And the Diversity was with God, and the Diversity was God. Without Diversity was nothing made that was made. And it came to pass that nasty old ‘orthodox’ people narrowed down diversity and finally squeezed it out, dismissing it as heresy. But in the fullness of time (which is of course our time), Diversity rose up and smote orthodoxy hip and thigh. Now, praise be, the only heresy is orthodoxy.
As widely and as unthinkingly accepted as this reconstruction is, it is historical nonsense: the emperor has no clothes.
D. A. Carson’s blurb for The Heresy of Orthodoxy: How Contemporary Culture’s Fascination with Diversity Has Reshaped Our Understanding of Early Christianity by Andreas Köstenberger and Michael Kruger (Crossway, 2010).