What makes a thing bad? Well, here is a pencil. This is a good pencil; it writes. That was why it was made. Is it a good can opener? It certainly is not. Suppose I use it as a can opener. What happens? First of all, I do not open the can. I do not attain the purpose for which I used the pencil. Second, I destroy the pencil. Now if I, for example, decide to do certain things which I ought not to do, I do not attain the purpose for which I was created. For example, becoming an alcoholic does not make me happy. Furthermore, I destroy myself, just as I destroyed the pencil in using it to open a can. When I disobey God, I do not make myself very happy on the inside, and I certainly destroy any peace of soul that I ought to have.