Sirach is not part of the Jewish canon, once thought to have been established at the hypothetical Council of Jamnia, perhaps due to its late authorship, although it is not clear that the canon was completely “closed” at the time of Ben Sira. Others have suggested that Ben Sira’s self-identification as the author precluded it from attaining canonical status, which was reserved for works that were attributed (or could be attributed) to the prophets, or that it was denied entry to the canon as a rabbinical counter-reaction to its embrace by the nascent Christian community.