"It's a mistake to think we can peel away these post-biblical traditions—the Oral Torah, the teachings of Talmud and Midrash, for the Jews; the New Testament and church tradition for the Christians; or, for that matter, the Quran, the only scripture they have for Muslims. And, say, let's get back to the Abraham of Genesis. Well, the Abraham of Genesis is interpreted differently by Jews and Christians. And Genesis itself is not canonical scripture for Islam," says Professor Jon Levenson.
