Jews refer to the first five books of the Bible as “the Law” (Torah), and Christians call them the “Pentateuch” or “The Five Books of Moses.” Numbers is the fourth volume in this series and relates Israel’s journey from Mount Sinai to the borders of the Promised Land, summarizing some 40 years of the nation’s history. The book begins with Israel making final preparations to leave Sinai. It then records their triumphal setting out, before relating a series of disasters in which the people grumbled about the difficulty of the journey and the impossibility of conquering Canaan. This response leads to God delaying the entry to Canaan by 40 years. The closing chapters of the book tell how the people at last set out again and reached the banks of the Jordan, poised to cross into the land promised to their forefathers.
Numbers thus relates a most important stage in the early history of Israel. Genesis begins with the creation of the world, but soon focuses on the life of the patriarchs and ends with their move to Egypt. Exodus tells how they left Egypt and came to Sinai to receive the law. Leviticus contains some of these laws, and Numbers still more. Numbers also summarizes the 40 years in the wilderness, and Deuteronomy (the sequel to Numbers) has Moses expounding the laws and urging the people to obey them. Deuteronomy ends with Moses’ death.
Another way of looking at the Pentateuch is as a biography of Moses (see ESV Study Bible, pp. 35–37). Numbers makes a vital contribution to this biography. First, it underlines Moses’ unique role as mediator between God and Israel. As elsewhere in the Pentateuch, it is constantly reiterated that “the Lord spoke to Moses.” And when this is challenged by his brother and sister, God himself intervenes: “With him [i.e., Moses] I speak mouth to mouth, clearly, and not in riddles, and he beholds the form of the Lord” (Num. 12:8). Second, it makes an astounding claim about Moses’ character: “Now the man Moses was very meek, more than all the people who were on the face of the earth” (Num. 12:3; see ESV Study Bible note on Num. 12:3–4). Third, it explains why Moses never entered Canaan himself : his failure to follow God’s instruction precisely is tersely told (Num. 20:10–13), as is the subsequent death of his brother Aaron for supporting Moses’ action (Num. 20:22–29). The book closes with the reader left in suspense about when and how Moses himself will die.
Numbers is to be classed as a historical work, not only because various details in it are corroborated by archaeological discoveries but also because it deliberately sets out to record what happened on the journey from Mount Sinai to the Jordan River. It does this to instruct future generations of readers with the lessons to be learned from the wilderness experience. It is saying in effect to the reader, “Your forefathers made many mistakes on their journey to Canaan; make sure you do not repeat them.”
However, Numbers does not paint an entirely gloomy picture: the book encourages its readers as well as warns them. By the end of the book the people of Israel have conquered formidable opponents in the Transjordan (the land east of the Jordan River), taken possession of their territory, and are poised to cross the Jordan and enter the Promised Land. In this way the book shows how the promises to the patriarchs are being fulfilled.