The Hebrew Bible or Tanakh is the Jewish scriptural canon and central source of Jewish law. The word is an acronym formed from the initial Hebrew letters of the three traditional subdivisions of the Tanakh: The Torah ("Teaching", also known as the "Five Books of Moses" or "Pentateuch"), the Nevi'im ("Prophets") and the Ketuvim ("Writings"). The Tanakh contains 24 books in all; its authoritative version is the Masoretic Text. Traditionally, the text of the Tanakh was said to have been finalized at the Council of Jamnia in 70 CE, although this is uncertain. In Judaism, the term "Torah" refers not only to the Five Books of Moses, but also to all of the Jewish scriptures (the whole of Tanakh), and the ethical and moral instructions of the rabbis (the Oral Torah).