מלכים ב, פרק ג׳, פסוק י״ח

The miraculous rescue of an army from dying of thirst in the desert is not the climax of the story, but merely an introduction to a much broader act of divine kindness. The primary approach among commentators is that supplying water in the wilderness is considered a small and simple matter in the eyes of God. He is about to perform an even greater and more significant act of kindness: delivering a total military victory over Moab [רש״י, מצודת דוד, רלב״ג, רד״ק].

Beyond being two separate events, there is a direct connection between the water and the victory. The sudden appearance of water is exactly what leads to Moab's downfall. The sight of it tricks the Moabites into believing that the kings of Israel and Judah have turned on one another and destroyed themselves. Because of this fatal mistake, the Moabites rush to the battlefield completely unprepared, allowing the Israelites to defeat them easily [חומת אנך].

A deeper perspective explores why the rescue is described as a simple thing, considering nothing is actually difficult for God. This relates to how the event unfolds. Rather than performing a massive, undeniable miracle like making it rain directly over the dry desert camp, God chooses to bring the water in a way that closely resembles nature. The rain falls far away in the land of Edom and naturally flows down to the camp. God chooses this natural route because the primary goal is the conquest of Moab, making the water simply a tool to achieve that end. Furthermore, the Israelites do not possess enough spiritual merit to receive two massive, open miracles at the same time. Therefore, God downplays the water miracle, blending it with nature, to preserve their merit for the central miracle of winning the war [מלבי״ם].

Another approach connects the insignificance of the situation to the low moral status of the Moabite nation, which explains a highly unusual command given during the campaign. Normally, Torah law strictly forbids destroying fruit trees during a war. However, the prophet orders the army to ruin every good piece of land and cut down the trees. This is because the Moabite nation is viewed as vile and worthless before God. Consequently, as a temporary measure and a specific punishment directed at Moab, the Israelites are granted permission to completely devastate their land [אברבנאל].