Deliverance from Slavery to the Ego
The Hidden Is Valued more than the Revealed
The prohibition against revealing the secrets of Kabbalah stems from the concern that disdain for Kabbalah may arise. Everything unknown elicits respect and is perceived as something valuable. Such is the nature of human beings: A poor person prizes a penny, but once he comes to possess a million, he prizes the million no longer, but seeks two million, and so forth.
The same pattern may be observed in science: the unknown elicits respect and is considered valuable, but once it becomes known and understood, is no longer valued. Then, new unknown objects take the place of the previous objects and become objectives to be pursued.
For this reason, the secrets of Kabbalah cannot be revealed to the masses, because once they grasp them, they will grow to disdain Kabbalah.