Hello, Prof. DeConick,
I plan to respond to Dr. Koester quite thoroughly in an upcoming issue of BAR.
If BAR does not publish it, I will use a venue in the blogosphere that will be easily accessible to those interested.
Forbidden Gospels Blog
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Hector Avalos left this message in the comments on my last post, bringing attention to Helmut Koester's criticism of Avalos in the recent edition of BAR.