Doesn’t the New Testament Show that Christianity Was Originally Unified?

In my discussions so far of orthodoxy and heresy in early Christianity I have been talking about Walter Bauer and his classic work, which argued that as far back as we can trace the Christian movement in numerous regions of Christendom, we find forms of the Christian faith that were later deemed heretical. “Heresy” is not necessarily, therefore, a later corruption of the orthodox truth. In some places it was the “original” form of the religion.

Some readers have objected that it doesn’t make...