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 Testament messianic prophecies quoted in the New Testament Old Testament messianic prophecies quoted in the New Testament The New Testament frequently cites Jewish scripture to support the claim of the Early Christians that Jesus of Nazareth is the Messiah, and to support faith in Jesus as the Christ and his imminent expected Second Coming. The majority of these quotations and references are taken from the Book of Isaiah, but they range over the entire corpus of Jewish writings. People of the Jewish faith do not regard any of these as having been fulfilled by Jesus, and in some cases do not regard them as messianic prophecies at all.