Deuteronomy 2

1 The wandering of the Israelites started by circling Mount Seir. This would typify much of their wandering over the next forty years. If they had obeyed, they would have immediately realized their purpose. When they disobeyed, their lives became aimless wandering as they waited to die.
3 This jumps ahead to the end of the forty years of wandering.
5 Gen 36:6-8 tells how Esau and Jacob chose to live in different parts of the Middle East. Here God indicates that He moved their hearts this way and the land would not be taken from Esau's descendants.
6 The Israelites could trade with the Edomites, but they were not allowed to wage war against them. Water was scarce in Edom, so the Israelites were to pay for it.
7 The children who grew up in the wilderness had learned obedience. It had not been easy trudging through the wilderness, but God had been with them, and they had everything they needed. There may not have been much to accomplish in the wilderness, but those things they could prosper at, God made sure that they did.
8 Num 20:14-21 shows that the Edomites were not receptive to the Israelites, but still the Israelites did not attack them. Instead, they passed by them.
9 Moab's birth is recorded in Gen 19:37. Lot was Abraham's nephew. Lot survived Sodom and Gomorrah because he was the only righteous man in the city. His faith was weak, but God honored the faith he had by allowing his son to inherit the land of Ar.
14 The forty years wandering is derived from the first two years from the Exodus to the first arrival at the Promised Land plus the thirty-eight years of punishment.
19 The Ammonites were descendants of another one of Lot's sons (Gen 19:38). God graciously gave them land and would not allow Israel to attack them because they were close relatives.
21 The Ammonites defeated a people larger and stronger than them because God was helping them. Like the Israelites now, they would not have been able to posses the land without God's help.
22 Referring back to Esau, Moses indicates that God had helped them gain their land as well.
24 God was not giving them the land that belonged to any of their "close" ancestral relationships. He would give them the land that belonged to Canaan, whom Noah had cursed in Gen 9:25-27 (note that the Israelites were descendants of Shem).
25 Part of God's plan for giving Israel victory was to make the enemies lose their will to fight. During their wanderings in the wilderness, word had spread how God had ravaged Egypt with plagues and then divided the Red Sea. They would also hear that God was determined to give the Israelites the land of Canaan. The words of Rahab in Josh 2:9-11 shows that God accomplished this purpose.