God demands we forgive others from our hearts - Matthew 17-19

Forgiving others may be one of the hardest things Believers do, if not the hardest. In the end of Matthew chapter 18 we have Jesus own words on the concept of forgiveness. He actually states that if we "don't forgive others 'from our hearts' our Father in Heaven will do the same to you." The illustration given by the Savior is that of a rich man who forgives one of his slaves a great amount and then the slave doesn't fogive someone who owes him a small amount. The analogy is quite clear for us. We are to fogive others, from the heart, simply because God has forgiven us. We have no "right" or "standing" to hold others to their sins and not fogive, since we too have sinned and are in need of forgiveness. But, the believer has the possibility to forgive someone, whereas the non-believer has no moral framework to forgive. When then non-believing world forgives they have no place to "put" the offense they are forgiving. In order for forgiveness to be true the offense has to be "paid for" to be truely forgiven. Otherwise there is no justice. Forgiveness absent justice is not forgiveness. It is ignoring the offense. There is some earthly merit in "ignoring" but that is not true forgiveness. The reason the believer can forgive "from the heart" is because we know that the offense (theirs and ours) has been paid for by the death of Christ. Since Jesus paid the penalty for the offense why am I withholding my love and forgiveness from them? I can forgive them, completely from the heart, because the offense has been delt with "justly." My flesh may struggle with "feelings" of forgiveness, but I am not to forgive them because I feel like it. I am to forgive with an action of the heart that is based upon Christ's finish work and forgiveness of them. That is true forgiveness.