Question: We learn in the wisdom of Kabbalah that “there is none else besides Him,” and that the Creator is kind and perfect. But if a person who has revealed that becomes a witness of a murder, how should he feel about that?
Answer: When we see evil in our world, we wonder: “How can it be that the Creator is good and perfect, the good that does good? Everything that the science of Kabbalah says refers to states at a level above the “Machsom” (the boundary between the corporeal and spiritual worlds). Goodness rules only at those degrees. By obtaining the property of bestowal, you begin to understand that the world is beautiful and the Creator is kind.
Below this boundary, one eats the other, both literally and metaphorically. Here, we should not expect good deeds; on the contrary, all of us around the world will feel worse and worse because it forces us to get rid of our ego.
If we were comfortable, the Creator treated us kindly, and life were good, we would remain little egoists, enjoying the small things. Only unhappiness pushes us towards development.
When you cross the border between the corporeal and spiritual worlds, you develop further by your own will. You no longer need problems because you yourself generate the force for your development.
From Lesson 1, Convention in Madrid, 6/3/2011