If you have sinned against a person, I've been told that you really aren't completely forgiven of that sin until you not only are forgiven by God, but also by that person against whom you've sinned. Two questions arise: 1. If the person against whom you've sinned does not forgive you, are you completely forgiven of that sin? 2. Does this also apply to so-called "sins of the heart" (such as outlined on Matthew 5:21-28), i.e., must you also seek forgiveness from the brother with whom you were angry and/or the woman toward which you have lusted if either sin went no further than "the heart"?