One argument states that when someone is hurt by another, it is best to show some resentment because it lets the other know that he or she is being taken seriously. If forgiveness cuts short the resentment process, the forgiver is not taking the other seriously and, therefore, is not respecting the other. Nietzsche (1887) also devised this argument.
We disagree with the basic premise here that forgiveness does not involve resentment. As a person forgives, he or she starts with resentment.
We also disagree that resentment is the exclusive path to respecting. Does a person show little respect if he or she quells the resentment in 1 rather than 2 days? Is a week of resentment better than the 2 days? When is it sufficient to stop resenting so that the other feels respected? Nietzsche offered no answer. If a person perpetuates the resentment, certainly he or she is not respecting the other.
Enright, Robert D.; Fitzgibbons, Richard P.; Forgiveness Therapy (Kindle Locations 5090-5097). American Psychological Association (APA). Kindle Edition.