Getting back to the main subject of this thread, "Bart Ehrman on the Historical Jesus," I find it quite surprising that he believes
the betrayal of Jesus by Judas Iscariot to be historical. Some of his reasoning on this seems quite bizarre, one of them being multiple attestation (from the site, bolding added):
Multiple attestation.
The traditions about Judas are multiply attested in numerous independent sources. It is independently found in both Mark and John; it is attested in a material unique to Matthew (the M source); and there is an independent tradition about it in the book of Acts. (Both M and Acts have accounts of Judas’s death, which are independent of one another and in fact at odds with one another at a number of key points: read them carefully yourself and take notes and you’ll see the irreconcilable differences. But they also have striking commonalities. My hunch is that historically, Judas died in a field in Jerusalem used by potters for its red clay, and somehow this field was connected with the money he acquired for the betrayal.)
In fact, Mark has Judas betray Jesus with a kiss, which would likely be based on the betrayal and assassination of Amasa by Joab in 2 Samuel (2 Sam. 20:8 - 10). Matthew's account of the betrayal uses Zechariah (Zech. 11:12, 13) as his source for Judas being paid 30 pieces of silver to betray Jesus. Zechariah's use of thirty shekels is itself based on Ex. 21:32. Matthew uses the suicide of Ahithophel as his source for Judas hanging himself (2 Sam. 17:23). Just as Ahithophel, counseling Absalom, betrayed King David, so Judas betrayed Jesus, supposedly the descendant of David. Thus, both hang themselves. The fact that the account of Judas' death in Acts doesn't support his suicide in Matthew is further evidence that it was made up, rather than historical.
It's pretty clear that both Matthew and Luke used Mark as their source of Judas betraying Jesus with a kiss. Consider that Jesus was supposedly a public figure, one the temple authorities were keeping an eye on. They wouldn't really need someone from his inner circle to show them where he was or to single him out from his followers. So, Matthew elaborates on Mark's story of the betrayal, and Luke spins it a different way. John, writing after all the other gospel writers, would certainly have picked up the basic story of betrayal from them.
Another problem with this story is that Jesus driving the moneychangers out of the temple seems to be the proximate cause of his arrest by the temple authorities. Yet, were that the provocation, he certainly would have been arrested on the spot. Instead, we are supposed to believe the temple guards stood by and did nothing while Jesus disrupted a lucrative temple enterprise, yet went out after him later. It seems far more likely that the ones who arrested Jesus were the Romans.
Ehrman goes on (from the link above, bolding added):
Dissimilarity. The tradition that one of Jesus’ closest followers betrayed him is usually understood to pass the criterion of dissimilarity – -meaning that since
it does not appear to be the kind of tradition that a Christian storyteller would “make up,” that it almost certainly is in multiple independent traditions because it actually happened. And why wouldn’t it be made up? Mainly because it appears to cast Jesus in an unexpectedly bad light as someone who had no more authority and power over even his closest followers than *that*. It speaks against his charisma and persuasive power that he couldn’t even control those nearest to him. This argument may not be overwhelmingly convincing on its own, but it is relatively convincing, and when combined with the abundant attestation of the tradition in multiple sources, it makes for a pretty compelling case.
Actually, the betrayal fits well with what Mark says of Jesus being rejected in his hometown and his predictions that the scribes and Pharisees would come against him. Again, it also fits the story of the betrayal of David in 2 Samuel. David is betrayed by his own son. Jesus is betrayed by one of his closest followers. There's prefect fictional symmetry. So, in point of fact, this is exactly what we would expect someone to make up about Jesus.
I have Ehrman's book
Did Jesus Exist?, but I'm having trouble looking things up in it, because, surprisingly, it lacks an index!