דברי הימים א, פרק ט״ז, פסוק י״ח

The promise of the land of Canaan serves as a foundational pillar in the enduring covenant God established with the forefathers of the nation [ביאור שטיינזלץ]. God directed this promise to each of the three patriarchs individually, repeating and reaffirming the covenant with each of them separately [רש״י, רד״ק]. By doing so, God established that the right to inherit the land belongs exclusively to the descendants of Jacob. This deliberate focus intentionally excludes Ishmael and Esau, despite their shared lineage as descendants of Abraham and Isaac [מצודת דוד].

As the historical focus shifts from the individual patriarchs to the entire nation, the message expands to address the Israelites directly [רד״ק]. The territory is no longer just a future promise made to individuals; it is recognized as the actual, realized inheritance of the people [מצודת דוד]. This inheritance is understood as a distinct portion or region [מצודת ציון, ביאור שטיינזלץ]. The concept draws upon the ancient practice of using a physical measuring rope to carefully survey and divide plots of land, illustrating that the nation's territory was deliberately measured and assigned to them [מצודת ציון].