There is no sin, but it is you who make sin when you do the things that are like the nature of adultery, which is called sin.That is why the Good came into your midst, to the essence of every nature in order to restore it to its root.Then He continued and said, That is why you become sick and die, for you are deprived of the one who can heal you. Chapter 4, in response to a question by Peter: "Since you have now explained all things to us, tell us this: what is the sin of the world?" Adultery is also translated as "fornication".