Book of Deuteronomy have given various answers to the problem. The Deuteronomistic history theory is currently the most popular (Deuteronomy was originally just the law code and covenant, written to cement the religious reforms of Josiah, and later expanded to stand as the introduction to the full history); but there is an older theory which sees Deuteronomy as belonging to Numbers, and Joshua as a sort of supplement to it. This idea still has supporters, but the mainstream understanding is that Deuteronomy, after becoming the introduction to the history, was later detached from it and included with Genesis-Exodus-Leviticus-Numbers because it already had Moses
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