...God's grace and forgiveness, while free to the recipient, are always costly for the giver.... From the earliest parts of the Bible, it was understood that God could not forgive without sacrifice. No one who is seriously wronged can "just forgive" the perpetrator.... But when you forgive, that means you absorb the loss and the debt. You bear it yourself. All forgiveness, then, is costly.
Timothy J. Keller
biblical-principles, forgiveness