What does Genesis 36:7 mean?
Esau has moved his family, his servants, and all that he owns away from Jacob and outside of the land of promise (Genesis 36:8). The two brothers were once so opposed that Jacob fled to avoid being murdered (Genesis 27:42). Later, they seem to have reconciled (Genesis 33:1–4). The reason for this separation is simply population. Between them, Jacob and Esau owned too much livestock for the land to support both tribes living in proximity. This echoes the reason given for Abraham and Lot parting ways earlier in Genesis (Genesis 13:8–13).Seir is already inhabited by the Horites (Genesis 14:6), whom Esau's tribes will overcome (Deuteronomy 2:12).
The descendants of Esau will become known as the nation of Edom (Genesis 25:30; 36:1). Jacob's sons will father the tribes of Israel (Genesis 35:10). The Old Testament records many incidents of strife between these nations, as they grow to become vehement enemies (Numbers 20:14–21; 1 Samuel 14:47; 2 Kings 8:20; Obadiah 1:8–11).