The book of Leviticus, in its catalogue of forbidden unions, says nothing about marriage between uncles and nieces. The rabbis of the talmudic period allowed and even approved of such marriages, at least between a man and his sister’s daughter; they seem to have differed on the question of marriage between a man and his brother’s daughter, while agreeing that it was not forbidden by the Bible. Later, a small number of medieval rabbis moved to prohibit any uncle-niece marriage at all, and recent scholars have discovered ancient manuscript evidence that both Sadducees and the Qumran sect forbade such unions. Rudolph Klein explains:
Does the Bible Allow You to Marry Your Uncle?
At America’s Best Universities, Biblical Religion Is a Curiosity, if Not a Menace
At the time of Columbia University’s founding in 1784, notes Meir Soloviechik, the leader of the local synagogue, Gershom Mendes Seixas, was made a member of its board of regents. A Jewish student even gave a commencement address, composed by Seixas, in Hebrew. In the 20th century, Columbia attracted numerous Jews with the relaxation of quotas, and was the first secular university to create a chair in Jewish history. Barnard College, Columbia’s all-women’s school, was itself founded by a Jewish woman, and today has a large number of Orthodox Jewish students.