Council of Jamnia

The Council of Jamnia, presumably held in Yavneh in the Holy Land, was a hypothetical late 1st-century council at which the canon of the Hebrew Bible was formerly believed to have been finalized and which may also have been the occasion when the Jewish authorities decided to exclude believers in Jesus as the Messiah from synagogue attendance as referenced by interpretations of John 9:22 in the New Testament. The writing of the Birkat ha-Minim benediction is attributed to Shmuel ha-Katan at the supposed Council of Jamnia.

The theory that Jamnia finalised the canon, first proposed by Heinrich Graetz in 1871, was popular for much of the 20th century. However, it was increasingly questioned from the 1960s onward, and the theory has been largely discredited.

The Talmud relates that some time before the destruction of the Second Temple in 70 CE, Rabbi Yohanan ben Zakkai relocated to the city of Yavne/Jamnia, where he received permission from the Romans to found a school of halakha (Jewish religious law).

The Mishnah, compiled at the end of the 2nd century, describes a debate over the status of some books of Ketuvim, and in particular over whether or not they render the hands "impure". Yadaim 3:5 calls attention to a debate over Song of Songs and Ecclesiastes. The Megillat Taanit, in a discussion of days when fasting is prohibited but that are not noted in the Bible, mentions the holiday of Purim. Based on these, and a few similar references, Heinrich Graetz concluded in 1871 that there had been a Council of Jamnia (or Yavne in Hebrew) which had decided the Jewish canon sometime in the late 1st century (c. 70–90).

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