> “ but since then much older manuscripts have been found.”
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More than 90% of which are in full affirmation of the received texts, and refutation of many of the corrupted portions of Sinaiticus and Vaticannus.
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Which edition of the "received text?" The reason there is concordance with the oldest known manuscripts is because there were so many redact ions to harmonize it with the oldest extant copies. The concordance with the earliest manuscripts is an artifical result after many deliberate repetitions. Would you like to know when the redact ions started and by whom?