שמות, פרק ט״ו, פסוק ד׳

After praising God for the personal downfall of Pharaoh, the song shifts to the total loss of Egypt's military core. The Egyptians marched into battle with advanced equipment and skilled commanders, yet their power was entirely useless against divine intervention [ספורנו, ביאור יש"ר]. The military force was vast, consisting of foot soldiers, cavalry, and six hundred elite, heavy chariots [אבן עזרא הקצר, רבנו בחיי]. Leading them were the most senior and elite commanders [אבן עזרא, שד"ל]. The destruction was absolute; the entire elite command structure was wiped out simultaneously, leaving no remnant behind [רש"י, שפתי חכמים, דברי דוד].

A striking contrast emerges in how the different divisions of the army met their end, distinguished by both the nature of their defeat and their location. The heavy chariots were violently cast into the deep sea, while the commanders sank in the Sea of Reeds. The chariots were thrown and shot with immense force [רשב"ם, שטיינזלץ, חזקוני]. This action typically describes a human shooting an arrow at a precise target. Here, however, instead of a soldier firing a weapon, God fired the enemy directly into the sea [רש"ר הירש]. Despite the immense weight of the chariots, God hurled them all together swiftly and powerfully, as if they were nothing more than a single, light arrow [אבן עזרא, שפתי כהן].

In contrast, the fate of the elite commanders was not a standard drowning in clear water, but rather a sinking and embedding into thick, solid mud and clay [רש"י, שד"ל, רש"ר הירש]. They did not simply fall into the water by chance; they were forcefully pushed and pinned to the seabed by a higher power, instantly losing all ability to move [שד"ל, רש"ר הירש].

This difference in their fates was deeply tied to their geographical positions. The Sea of Reeds is named for the vegetation growing along its shores, an area naturally thick with mud and clay [אבן עזרא, תולדות יצחק]. Pharaoh and his heavy chariots had charged far ahead into the deep center of the sea. Since there is no mud in the deep waters, they did not sink into clay but were instead hurled and churned in the depths. The elite officers, riding in the rear, remained close to the muddy shore. Naturally, the strong horses of the cavalry should have been able to swim and easily carry their riders to safety from the shallow water. Yet, through miraculous intervention, it was precisely these officers who became trapped in the coastal mud with no chance of escape [כלי יקר, העמק דבר, מלבי"ם]. God completely reversed the natural order: the heavy chariots that should have sunk in the mud were thrown into the deep water, while the lighter cavalry that could have floated sank straight into the clay [אלשיך].

This transformation of the seabed into a thick, muddy trap was not a coincidence, but an act of measure-for-measure justice. Just as the Egyptians brutally enslaved the Israelites with backbreaking labor using mortar and bricks, God turned the sea into mortar and clay to serve as their final resting place [רש"י, צאינה וראינה, שפתי כהן]. Similarly, just as Pharaoh had cruelly decreed that the Israelite children be thrown into the river, God threw Pharaoh's prized chariots into the sea [רבנו בחיי].