Ehrman says the modern Bible was shaped by mistakes and intentional alterations that were made by early scribes who copied the texts. In the introduction to Misquoting Jesus, Ehrman writes that when he came to understand this process 30 years ago, it shifted his way of thinking about the Bible. He had been raised as an Evangelical Christian.All that stuff about "Let he who is without sin cast the first stone"? According to Ehrman, that was not originally in the text. It was written in the margins and eventually made its way into the main body of the text.
We see that all the time with Chinese texts--people arguing over whether such-and-such character was really something else before a scribe got it wrong, or if such-and-such a passage was really originally part of a later commentary. It was fun to see someone speak engagingly about this stuff, and... did I mention that it was on the Daily Show?!