Written Torah refers to the Hebrew Bible. Oral Torah is Jewish nomenclature for the entire body of authoritative rabbinic law and lore. Some of this was eventually committed to writing in works such as the midrashim, which expound on books of the Bible; the Mishnah, a law corpus compiled by Rabbi Judah the Prince in about 200 C.E.; and the Gemara, a running commentary on the Mishnah from the fifth century C.E.