M. Sanhedrin 10:1 is considered to be the most important statement of rabbinic heresiology in tannaitic literature. However, a close examination of this text’s development suggests that it is not a straightforward expression of c. 200 C.E. rabbinic doctrine at all, but a reworked tradition from an earlier sectarian milieu.Last year I noted Dr. Grossberg's new book, Heresy and the Formation of the Rabbinic Community (Tübingen: Mohr Siebeck, 2017) here.
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