Question: How did the transition of the invisible spiritual world into the corporeal world take place?
Answer: There is no matter and there is no corporeality. Everything around us exists in our imagination, only inside of us, in our feelings.
Everything around us is absolutely subjective because we exist in certain coordinates and feel everything with regard to ourselves.
Question: Why is the illusory world in which we live and which exists only in our imagination so terrible and the suffering of millions is so unbearable?
Answer: All the suffering is meant to push us out of it, upward, to a better world. Until we want that ourselves, we will be here and suffer.
From the Kabbalah Lesson in Russian 3/19/17