All we can say is that, as the result of a process which went on from the fourth century to about the eighth, a standard type of text was produced, which is found in the vast majority of the manuscripts that have come down to us. At least ninety-six per cent of the extant manuscripts of the Greek New Testament are later than the eighth century; and of those only a handful preserve traces of the other types of text which were in existence before the adoption of the standard text, and out of which it was created.
"The Story Of The Bible" by Frederic G. Kenyon. Ch. IV, From manuscript To Print, p. 39, 1949.