יהושע, פרק א׳, פסוק י״ג

Joshua turns to the tribes of Reuben, Gad, and half of Manasseh with a firm reminder of the historical agreement they made with Moses before crossing into the land. This directive highlights the deep connection between their right to settle in their chosen territory and their moral and military obligation to the rest of the nation. He issues an absolute command to remember this pact, noting that God is granting them a secure resting place, specifically referring to their territory on the eastern side of the Jordan River. According to [מלבי״ם], God actually provides them with two distinct benefits. First, He grants them immediate physical rest; their wives and children are already settled safely, no longer wandering through the desert. Second, He gives them the exact region of land they originally requested.

A careful look at Joshua's instructions reveals a shift from the original agreement. Moses initially required these tribes to fight only until the land was conquered. Joshua, however, demands that they remain and fight until the entire land is fully divided among the other tribes. [מלבי״ם] explains that this change stems from the nature of the upcoming military campaign. Moses originally anticipated that the conquest would occur through open miracles, meaning their participation would only be needed for the initial takeover. Once it became clear that the war would be fought through natural means, it became necessary for these tribes to remain as a supporting force until the land was completely divided and all hostilities ceased.

Looking at the deeper motive behind sending these tribes to the front lines, another perspective suggests it is not out of military necessity. God is the One who fights for the nation, and the spiritual merit of the majority is what truly determines the outcome of the battles. The participation of the eastern tribes is merely supplementary. Instead, [אלשיך] explains that the true purpose of this command is to allow these tribes to earn their chosen land by right rather than receiving it as a simple favor. As long as they have not fully met their obligations, their territory remains legally classified as a conditional gift, a status that could potentially be revoked. Only by marching into battle alongside their brothers and seeing the campaign through to the final division of the land can they transform this temporary gift into an absolute and permanent inheritance.