Question: What does the Klipa (shell, impure force) protect us from?
Answer: The Klipa protects us from the Creator! While we are in our pride, we cannot unite with Him and always develop due to two forces: one force develops us from within with the help of the Light and the other restrains and stops us, causing us to remain within our desire to enjoy for our own sake, which is in fact Klipa.
However, when we grow to the next state, we need to remove and throw away the Klipa so that we can use the ripened “fruit” as “food” for man within us. Therefore, it is customary to remove the peel from the fruit and not to use it as food.
From the 4th part of the Daily Kabbalah Lesson 7/14/10, “Introduction to the Book, Panim Meirot uMasbirot”