In the story of the Creation we read: ". . . And behold, it was very good." But, in the passage where Moses reproves Israel, the verse says: "See, I have set before thee this day life and good, and death and evil." Where did the evil come from? Evil too is good. It is the lowest rung of perfect goodness. If you do good deeds, even evil will become good; but if you sin, evil will really become evil.