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
The Exodus were Canaanite rulers of the Egyptian Delta in the 16th century BCE, may have formed the basis of the descent into Egypt and the exodus. The meaning a reader takes away from a text depends on his or her understanding of the literary "type" to which it belongs: as one scholar puts it in his discussion of the Genesis creation myth, "it makes an enormous difference whether the first chapters of Genesis are read as scientific cosmology, creation myth, or historical saga" (Wood, 1990). There is an almost universal consensus among scholars that the Exodus story is best understood as