Quotation for Eruvin 107:33

לא אשים עליך I WILL NOT PLACE ON THEE — and if I do place them on thee because thou refusest to hearken to My voice, it will be as though they had not been placed on thee, for if thou repentest of thy disobedience I will remove them immediately, כי אני ה׳ רפאך BECAUSE I AM THE LORD THAT HEALETH THEE. This is its Midrashic explanation (Mekhilta d'Rabbi Yishmael 15:15). But according to its literal sense the meaning is: For I am the Lord who healeth thee and teacheth thee the Law and Commandments in order that thou mayst be saved from them (these diseases) — like a physician who says to a man: Do not eat this thing lest it will bring you into danger from this disease. So, too, it states, (Proverbs 3:8) “It (obedience to God) will be wholesome to thy body” (implying that disease will not fall upon thee) (Mekhilta d'Rabbi Yishmael 15:15).