... Regarding the cyst on your son Joseph's lip, about which you write that you are watching, it is no doubt unnecessary for me to remind you that you should not rub it or irritate it in any way.
Inasmuch as G-d has been kind to you in the past, especially in matters of health, you will surely have every confidence in Him in the future, for G-d is the true Healer, as it is written in the Torah, "For I, G-d, am your Healer." And, the cure that G-d sends is different from the cure of a human doctor, for G-d's cure is preventive, as it is written, "All the sickness... I shall not send upon you, for I, G-d, am your Healer." The zechus of your educational work of bringing Jewish children closer to their Father in Heaven will surely stand you and all your family in good stead.
Wishing you all a happy Purim,
==== Rebbe’s Letter written 4th of Adar, 5718 - 1958. Chabad.org
