"All of the illness which I placed in Egypt I will not place upon you" — God promised the Israelites immunity from the plagues that devastated their former oppressors. But then the verse adds a seemingly contradictory phrase: "for I am the Lord who heals you." If God promised not to inflict illness in the first place, what need is there for healing?
The Mekhilta resolves this through a teaching that God delivered to Moses. Tell Israel, God said, that the words of Torah which I gave to you are themselves the healing. Torah is not merely a legal code or a historical record — it is medicine for the soul and the body. The study and observance of Torah prevents spiritual illness before it can take root.
Two verses from Proverbs confirm this. (Proverbs 4:22): "For they are life to him who finds them." And (Proverbs 3:8): "It is healing to your navel and marrow to your bones." Torah is described in physical, almost medical terms — as something that penetrates to the bones, that restores vitality to the body's core.
The Mekhilta's message is that God's promise of health was not a passive guarantee. It was conditional on Israel's engagement with Torah. The healing was already built into the commandments. The Torah itself was the preventive medicine God offered. Accept it, study it, live by it, and the diseases of Egypt would never touch you.