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
Old Saxon Genesis of Satan employing a "hæleðhelm" or helm of disguise. Old Saxon Genesis Genesis is an Old Saxon Biblical poem recounting the story of the Book of Genesis, dating to the first half of the 9th century, three fragments of which are preserved in a manuscript in the Vatican Library, "Palatinus Latinus" 1447. It and the "Heliand", a heroic poem based on the New Testament, a fragment of which is also included in the same manuscript, constitute the only record of Old Saxon poetry. It is also the basis of the Anglo-Saxon poem known as "Genesis B", and Eduard Sievers postulated