The intent of forgiveness is to change the heart and the whole way of being one with another. Forgiveness is tough to accomplish. It is actually counter-cultural. Just read the newspaper with the idea of forgiveness in mind. Many of the articles have to do with holding people accountable, establishing blame, and getting those scales even again.
Forgiveness seeks another way.
The king does not say that. It means that the hurt which has been done, or the debt which has been incurred to you no longer has power over you. You can look at a person who has hurt you and see new possibilities, new life. Forgiveness seeks a change in the person and in the community. Jesus wanted us to see that the path to a life with God is paved with the stones of forgiveness.