The Mekhilta offers a second reading of the phrase "as a stone" from the Song at the Sea. The Egyptians sank like stone because their hearts were hard as stone — unyielding, unmovable, deaf to mercy. Their own rigidity became the instrument of their downfall.
But the passage pivots sharply from judgment to grace. While Egypt drowned beneath the weight of its own stubbornness, <strong>God's</strong> goodness, lovingkindness, and mercies remained extended to Israel. The text draws attention to a remarkable detail in (Exodus 15:6) — the phrase "Your right hand" appears twice. This repetition is no accident. God's right hand, the symbol of power and favor, works double duty: it strikes down the wicked and simultaneously shelters the faithful.
The Mekhilta reinforces this with two supporting verses. (Psalms 44:4) declares that Israel did not conquer the land by their own sword, but by God's right hand, arm, and the light of His countenance — "for You favored them." And (Isaiah 45:23) records God's unbreakable oath: "By Myself I have sworn. From My mouth has gone forth righteousness, a word that will not turn back."
The contrast is devastating. Hardness of heart leads to destruction as stone. But God's outstretched right hand — doubled, emphasized, repeated — offers an unshakeable promise to those who receive it.