Baal HaSulam writes that the advantage a person has over an animal is that the desire for spirituality awakens in a person. If not for this, a person would lead an animalistic existence. Spiritual aspiration is what makes a human (Adam) out of a person.
“Egyptian slavery” is a state preceding spirituality, like a corridor we must pass in order to enter the spiritual world. Therefore, first we enter Egypt. Once there, we begin to clarify our desires and prepare ourselves for the spiritual degree.
Egypt is characterized by an immense increase in egoism until a person wants to swallow the whole world. The person then begins to ask, “What is the meaning of my life?” and to search for the answer. In the end, he sees that egoism completely dominates him, making him a slave of Pharaoh. He does not agree with this and wants to work for the Creator instead.
But he discovers that he cannot do this. Therefore, he screams and makes demands until he is in complete despair that his efforts do not bring any result, as it is written, “And the children of Israel sighed from the work.”
The person feels blows because he is striving for spiritual work, but sees that nothing comes from it, and a cry bursts out of him. That is, the right desire, the request, arises in him and he then comes out of Egypt.
How many times during the years of our work have we tried to bestow, to unite, to think well of others, and to care, but so far, we have seen no results? Where do all our efforts go? After all, nothing disappears without a trace. We are in a closed system where the law of conservation of energy operates. But where is the fruit of my work, my desires, cares, successes, and misses— does it all really just disappear?
No. It all accumulates: my, yours and humanity’s work throughout all times. Therefore, there are people who receive such burdening of the heart that leads them to the exodus from Egypt. Others continue the Egyptian slavery for now, but nevertheless, from generation to generation, they accumulate their efforts. This applies to all of humanity, without exception.
Even a tiny louse that makes efforts to eat and survive also contributes to the common piggy bank, because it also belongs to the common desire created by the Creator.
From the 1st Part of the Kabbalah Daily Lesson 3/11/18, “Preparation for Pesach,” Part 1