מלכים ב, פרק ג׳, פסוק כ״ג

A trick of the light and a deep familiarity with the local landscape combine to lead the Moabite army toward a hasty and fatal conclusion. As they look out over the arid plain toward the enemy camp, an unusual sight catches their attention, prompting a disastrous misinterpretation of reality.

Commentators agree that the Moabites' reaction stems directly from their knowledge of the dry terrain. Because water had never flowed in that specific region, the possibility of a sudden, miraculous flood never even crossed their minds. Instead, when the morning sun rose and cast a red reflection across the newly formed pools, the Moabites were entirely convinced they were looking at a valley filled with blood.

This vision leads them to a logical, yet deeply flawed, assumption about the allied armies. Commentators unanimously explain that the Moabites believe a fierce dispute must have broken out within the enemy camp. They assume the kings and their soldiers turned their swords against one another, resulting in a massive, mutual slaughter.

Confident that the enemy has completely destroyed itself, the Moabites conclude that actual combat is no longer necessary. They believe all that remains is to walk safely into the camp and freely gather the abandoned spoils of war.