God's people journey from Mount Sinai toward the Promised Land, but it takes 40 years due to their unbelief. Chapters 1-10 see God preparing His people at Sinai. Chapters 11-16 detail their rebellion and lack of faith, for which God punishes them. However, God remains patient and His promises will prevail, as shown in chapters 17-36, where His people continue to prosper in size and God remains with them, fulfilling His promises to Abraham.