Good is Love, and Evil is lack of Love, and Love is Christ (Son of God in the hexagram).
Love is the equilibrium of The Father and The Mother, and lack of Love is when we are out of equilibrium, that is, either the Mother or the Father are dominating. On Earth this condition is called Evil, or to be precise, Lucifer and Ahriman (Satan, Mammon, …) to show what dominates.
Sin creates Karma, and you sin when you do something you KNOW is evil/wrong, so a Cannibal living in a Cannibalistic tribe don’t create Karma because of cannibalism, not before the Christian priests come and tell him about the ten commandments, that you may not kill. This is also one of the reasons why children don’t create Karma.
Remember, Karma helps us to grow, it’s our memory from life to life.
A Rosicrucian once said: “We are on this Earth to sin, so sin, until you are tired of it, then stop, don’t continue as per habit.”. Or, in other words: It’s OK to fall, but not to stay down.
Those who don’t live because they are afraid to Sin don’t learn, they don’t create the necessary equilibrium between Chaos and Order, Feelings and Thinking, giving Love, Wisdom, and Will.