I want to react briefly to Carl's comment about the style of John 21. While
the sentence structure may resemble John 1-20, the vocabulary is very
different. Check the lists in Charles Kingsley Barrett's commentary on John.
It supports the view that John 21 is an addendum, by a different member of
the Johannine school.
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(Edward Hobbs now:)
Edgar certainly has virtually all the best Johannine scholars in support of
his comment. We dare not engage in arguments about authorship on this
List, since theological factors enter into the issue for some among us.
But the vocabulary differences have been noted, since early times.
Edward Hobbs