This blog was quite interesting and I am glad I took the time to read it. I believe you will enjoy it as well.
In the New Testament, at least two passages have been interpolated into the letters of Paul: 1 Thessalonians 2:14-16 and 1 Corinthians 14:34-35. Today I’ll present the evidence for this conclusion that most experts have long known about, but most laymen never hear.
For those not savvy to the study of ancient manuscripts (called textual criticism), an “interpolation” is a word or passage that was added to a text after it was written and disseminated, added of course by someone not the author, who wished to pass off that “interpolated” text as being by the author (or, often times, this insertion happens by accident–but that didn’t happen here). We have hundreds and hundreds of examples of interpolations in the Biblical manuscripts (most of which you don’t hear about because they are so obviously interpolations that they aren’t in your bibles but were deleted by modern scholars, or never got in because our bibles came from only one of many lines of the textual tradition, each line interpolating its own words and passages like crazy). For examples and discussion (and books to consult) see my slideshow (PDF) for the Carrier-Holding debate.
That was only a snippet. Go on, go read the rest!