Book of Numbers twelve princes, one of each tribe. The majority of modern biblical scholars believe that the Torah (the books of Genesis, Exodus, Leviticus, Numbers, and Deuteronomy) reached its present form in the post-Exilic period (i.e., after c.520 BCE), based on pre-existing written and oral traditions and "contemporary geographical and demographic details but even more importantly from contemporary political realities". The five books are often described as being drawn from four "sources" - schools of writers rather than individuals - the Yahwist and the Elohist (frequently treated as a single source), the Priestly source and the Deuteronomist. There is ongoing dispute over
Book of Leviticus as well as of the Samaritan temple. Evidence of its influence was found among the Dead Sea Scrolls, which included fragments of seventeen manuscripts of Leviticus dating from the third to the first centuries BC. Many other Qumran scrolls cite the book, especially the Temple Scroll and 4QMMT. Leviticus's instructions for animal offerings have not been observed by Jews or Christians since the first century AD. Because of the destruction of the temple in Jerusalem in 70 AD, Jewish worship has focused on prayer and the study of Torah. Nevertheless, Leviticus constitutes a major source of Jewish law and is