In the “Introduction to the Book From the Mouth of a Sage,” Baal HaSulam writes: “It is known from books and from authors that the study of the wisdom of Kabbalah is an absolute must for any person from Israel. … if one studies … but has not learned the wisdom of Kabbalah, he must reincarnate into this world to study the secrets of Torah and wisdom of truth. ..
“You can therefore see the utter necessity for anyone from Israel, whoever he may be, to engage in the internality of the Torah and in its secrets. Without it, the intention of Creation will not be completed in him.
“This is the reason why we reincarnate, generation-by-generation through our current generation, which is the residue of the souls upon which the intention of Creation has not been completed, as they did not attain the secrets of the Torah in the past generations.”
It is our duty to make this last effort and spread the wisdom of Kabbalah, the method of correction of the souls that descend into our world at this time. These are the smallest, lowest, and most insignificant souls. But because of their insignificance, they will give out the greatest Light after correction.
Here, the law of inverse relation of desire and Light operates. That is why it is the lowest desires that exist in our world that should give out the greatest Light, which will correct all souls, connect them, and give them one common Light impulse from which they will all unite.
Question: Are the souls that recirculate in our world all the time the same souls?
Answer: No. Sometimes there are also renewals and conjugations of souls, their mutual merging and division. It is very complicated. Just as in a living organism: cells, liquids, and systems are constantly mutually replaced and transformed.
This can only be grasped in feelings. When one reveals the whole system, he begins to see what happens in it. And it can be revealed only if a person constantly tries to imagine that everything that happens in it comes from the Creator.
From the Kabbalah Lesson in Russian 10/29/17