• Trinity doctrine: Less than 300 years after the Bible was completed, a Trinitarian writer added to 1 John 5:7 the words “in heaven, the Father, the Word, and the Holy Ghost: and these three are one.” That statement did not appear in the original text. “From the sixth century onwards,” notes Bible scholar Bruce Metzger, those words were “found more and more frequently in manuscripts of the Old Latin and of the [Latin] Vulgate.”

Second, the sheer volume of manuscripts today actually helps Bible scholars to spot errors. For example, religious leaders taught for centuries that their Latin versions contained the authentic Bible text. Yet, at 1 John 5:7, they had inserted the spurious words referred to earlier in this article. The error even crept into the influential English King James Version! But when other manuscripts were discovered, what did they reveal? Bruce Metzger wrote: “The passage [at 1 John 5:7] is absent from the manuscripts of all ancient versions (Syriac, Coptic, Armenian, Ethiopic, Arabic, Slavonic), except the Latin.” As a result, revised editions of the King James Version and other Bibles have removed the erroneous phrase.