Question: Passover lasts seven days. Why?
Answer: Seven days are seven Sefirot, all levels of our soul. On the first day of Passover, a man leaves the intention for his own sake and continues to get rid of his egoistic intentions on the second and third days, etc., until he completely becomes separated from them. And so he comes to the state called Yam Suf—The Final Sea. He is ready to throw himself into it in order to completely break away from Egypt (from his egoism).
Question: The exodus from Egypt is the last frontier of the material, egoistic world, behind which there is a conventional line called Machsom. Having passed it, a man begins to feel love, bestowal, the spiritual world. What happens to him? What is the transformation beyond this line?
Answer: Beyond this line a man thinks only about how through others can he more and more realize the property of bestowal and love in himself. As a result, he begins to feel in this property that he is being filled with the upper light—the Creator.
From KabTV’s “Spiritual States” 3/26/21