The Mekhilta DeRabbi Yishmael draws attention to a single word in the Song at the Sea that transforms the entire verse from a description of the past into a prophecy of the future. The verse reads: "Your right hand, O L-rd, will break the foe" (Exodus 15:6). The key observation is that the Torah does not say "broke," in the past tense. It says "will break," in the future tense.
This grammatical detail matters enormously to the rabbis. The Song at the Sea was sung after the Egyptian army had already been destroyed. The drowning was complete. Pharaoh's chariots were at the bottom of the sea. If the verse were merely describing what had just happened, it would use the past tense: "Your right hand broke the foe." But it does not. It points forward: "will break."
The Mekhilta connects this future-tense promise to (Habakkuk 3:12): "In fury You will tread the earth; in wrath You will trample nations." This prophetic verse describes God's final reckoning with the nations at the end of days. By linking the two texts, the Mekhilta reveals that the Song at the Sea is not only a celebration of the Exodus. It is a prophecy about the future redemption.
The defeat of Egypt at the sea was real and historical. But the language of the song looks beyond that single event to every future confrontation between God and the enemies of Israel. God's right hand did not merely act once and retire. It "will break" the foe, again and again, until the final fulfillment described by Habakkuk. The Exodus, in this reading, is not just a memory. It is a template for all future redemptions, a guarantee written in the future tense that what God did once, He will do again.