The Song of the Sea declares: "A horse and its rider He has cast into the sea" (Exodus 15:1). But this statement raises an immediate question. Was there really only one horse? The Torah itself records that Pharaoh marshaled "six hundred choice chariots" (Exodus 14:7) — a massive cavalry force. Why does the song speak in the singular?
The Mekhilta offers a striking explanation. When Israel does the will of God, their enemies are reduced to insignificance. It does not matter if the opposing army numbers six hundred chariots or six thousand. In God's eyes, they amount to no more than "one horse and its rider." The singular language is not a counting error — it is a theological statement about the nature of power when God is involved.
The same principle appears in Deuteronomy (20:1): "When you go out to war against your enemy and you see horse and chariot" — again using the singular. Once more the Torah implies that when Israel walks in faithfulness, even a vast enemy army appears as a single horse with a single rider. The numerical advantage dissolves.
This teaching carries a deeper implication: military calculations are secondary to spiritual reality. The six hundred chariots of Egypt were the most formidable fighting force in the ancient world. But at the moment of the sea's splitting, all that hardware collapsed into a single image — one horse, one rider, tossed into the waves like nothing. The Mekhilta reminds us that the real battlefield is not physical but spiritual, and on that battlefield, God's will determines the outcome.