דברים, פרק י״ט, פסוק ט׳

The promise of expanded borders for the Land of Israel is directly tied to the spiritual perfection of the nation, triggering a unique commandment reserved exclusively for the end of days. Inheriting these new territories depends entirely on the people keeping the entire Torah [טור הארוך, רלב״ג, ביאור שטיינזלץ].

Commentators explore the expectation that the nation must follow God's path constantly. One perspective explains this as an obligation to walk in His ways continuously, without any interruption [אבן עזרא]. Others, however, raise a practical difficulty regarding how a physical commandment can be conditioned on an unknown future, given the constant risk that people might eventually fall back into sin. Because of this human uncertainty, they conclude that the promise must refer specifically to the era of redemption. In that future time, the nation will achieve a complete and eternal love for God, and it will be fully known before Him that they will never sin again [העמק דבר, טור הארוך, ביאור יש״ר].

Once this spiritual milestone is reached and the borders expand, a new obligation will arise to protect unintentional murderers within the new territories by adding three more cities of refuge [ביאור שטיינזלץ]. The primary approach among commentators is that this addition will bring the total number of refuge cities to nine, consisting of three across the Jordan River, three in the land of Canaan, and three extra cities to be built in the future [רש״י, רבנו בחיי, בכור שור]. Because these final three cities were never established in history, it serves as clear proof that this involves a prophecy waiting to be fulfilled at the end of days [רלב״ג].

This future vision presents a fundamental question. If the era of redemption is defined by spiritual perfection, a time when no blood is shed and murders do not occur, why would cities of refuge be necessary at all? One explanation suggests that these future cities are not meant for new accidents. Throughout the long years of historical exile, many people committed unintentional manslaughter but had no city of refuge to flee to for atonement. When the world is ultimately repaired and the Temple is rebuilt, those individuals, or their reincarnated souls, will need to flee to these nine cities. This will allow them to complete their atonement and resolve the lingering debts of blood from the long period of destruction and exile [פני דוד].