במדבר, פרק ל״ד, פסוק י״ד

The defined borders of Canaan are directly shaped by the decisions previously made by the tribes settling on the eastern side of the Jordan River. God established the specific boundaries of the land precisely because these tribes chose to take their inheritance outside of it. Had they not claimed their territory elsewhere, God might have expanded the borders of the Promised Land much further [אור החיים]. Furthermore, this action carries a sense of absolute finality. Once these tribes claimed their portion, the decision became permanent, leaving them no option to change their minds and demand territory inside Canaan [העמק דבר].

The settlement of the half-tribe of Manasseh is treated as a distinct event rather than a mere continuation of the actions of Reuben and Gad. They did not initially partner with the other two tribes in requesting land east of the Jordan. Because their acquisition happened separately, it is emphasized to confirm that this territory is indeed their true, fitting inheritance, validating their sense that their destined land had come to them [אור החיים].

A notable distinction exists in how these inheritances are characterized. While Reuben and Gad received their territories based on their tribal and family lineages, this familial framework is absent in the case of the half-tribe of Manasseh. One perspective suggests that unlike the other tribes who inherited based on lineage, the descendants of Manasseh earned their land through military bravery [העמק דבר]. Another approach notes that a family inheritance implies wholeness. Since only half of the tribe of Manasseh settled east of the Jordan, they lacked the complete tribal unity required for such a designation [ברכת אשר על התורה בשם הרצי ה קוק].