Regarding Ehrman’s claim that all manuscripts are filled with errors; we noted the kinds of errors that are to be found in the copies. The vast majority of them are quite inconsequential. And less than 1 percent  of all textual variants both affect the meaning of that verse (though none affects a core doctrine) and have some plausibility of authenticity. [1]

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Darrell L. Bock and Daniel B. Wallace, Dethroning Jesus: Exposing Popular Culture’s Quest to Unseat the Biblical Christ, (Nashville, TN.: Thomas Nelson, 2007), 71. Print.