Answer: It is because all faiths and religions are completely egoistic. Religious wars and attacks have continued for thousands of years and have not ceased to this day, especially in Judaism. Many factions and religious denominations have appeared and all of them are pitted against each other.
Religions don’t apply the general rule, “You shall love your friend as yourself” (“Leviticus” 19:18). In general, where are they upholding this Mitzvah (commandment) and in what way?
So, the wisdom of Kabbalah has no connection to religions. And this is also the essence of the problem. We have a huge clash with various religious organizations. Religious organizations believe by performing mechanical actions, a person assures himself the world to come.
Kabbalah says that with this mechanical implementation, a person will not have the world to come but remains an egoist. If there is no ascent above his egoistic nature, what kind of spiritual world can there be for him?
The world to come is a world of altruism that a person constructs while he is in this world through implementing the principle, “You shall love your friend as yourself.” It follows that religion simply buys people and nothing more.
Comment: It is interesting that for people who study the wisdom of Kabbalah, nothing prevents them from remaining in their religion.
Answer: Every person who wants to can be involved in the wisdom of Kabbalah regardless of his religion. Baal HaSulam writes about this in his book, The Last Generation.
Belonging to one religion or another doesn’t bother a person; he can safely maintain its customs. But internally he must be changed to altruism, rising above his egoistic nature. This is what differentiates the wisdom of Kabbalah from religion. Everything else is a tradition that can be maintained or not maintained. This is a personal matter. But ascending above the ego through the wisdom of Kabbalah is an absolute postulate.
From the Kabbalah Lesson in Russian 3/20/16