This is by Joel Peters.  It is taken from Twenty One Reasons to Reject Sola Scriptura. One historical fact which proves extremely convenient for the Protestant is the fact that the canon of the Bible – the authoritative list of exactly which books are part of inspired Scripture – was not settled and fixed until the end of the 4th century. Until that time, there was much disagreement over which Biblical writings were considered inspired and Apostolic in origin. The Biblical canon varied from place to place: Some lists contained books that were later defined as non-canonical, while other lists failed to include books which were later defined as canonical. For [...]