How do we know that Chaos is in Evil? It is written (Isaiah 45:7), "He makes peace and creates evil." How does this come out? Evil is from Chaos, while Peace is from Desolation. He thus created Chaos and placed it in Evil, as it is written "He makes peace and creates evil." He created Desolation and placed it in Peace, as it is written, "He makes peace in His high places."
Rabbi Bun sat, and also expounded: What is the meaning of the verse (Isaiah 45:7), "He forms light and creates darkness"? Light has substance. Therefore, the term "formation" is used with regard to it. Darkness has no substance, and therefore, with regard to it, the term "creation" is used. It is similarly written (Amos 4:12), “He forms mountains and creates the wind." Another explanation is this: Light was actually brought into existence, as it is written (Genesis 1:3), "And God said, let there be light." Something cannot be brought into existence unless it is made. The term "formation" is therefore used. In the case of darkness, however, there was no making, only separation and setting aside. It is for this reason that the term "created" is used. It has the same sense as in the expression, "That person became well.”