Mark scholar Ted Weeden (2001) summarizes the reasons why Judas' betrayal should be considered fiction in a short essay posted to the discussion group Kata Markon.(1) Paul, whose letters predate the Gospel of Mark in most dating schemes, does not appear to have known of Judas' betrayal.
Further, when Paul discusses the the resurrection appearances to various early Christian leaders in 1 Cor.
15, Paul cites "Peter and then to the Twelve"--- not "Peter and then to the eleven." Weeden argues that Paul's citation, which must date before the 50's, suggests that the Twelve are a coherent and faithful body of original disciples whose original integrity is in tact.
And he sought an opportunity to betray him.: "Judas." Judas occurs but three times in the Gospel of Mark, in once in Mark 3 and twice in Mark 14.
Some exegetes, such as Helms, see this as a creation from Zech 11, but while Matthew's Judas is clearly partly related to that passage, the link is more tenuous in Mark.
1 Cor , where Paul is often held to have said Jesus was "betrayed" in reality says only that he was "handed over or delivered up" ().