The Creator Is The Source Of Everything

Question: If only the Creator exists and He is absolute good, who and what is the origin of all the suffering and deficiencies of the creature?

Answer: It is the Creator. He is the origin of everything. He says so, “I created the evil inclination” (Kiddushin, 30b). He doesn’t even ask for forgiveness. You will suffer thousands of years, but then it will be good for you.
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From the Kabbalah Lesson in Russian 3/12/17