Forgiveness doesn't mean it doesn't matter, but rather taking your hands off of someone else's throat, allowing you to live peacefully with others, and not being held hostage to past wounds. The Bible teaches that forgiveness is an act of faith, and that we can release others to the judgment of God, even if they never ask for forgiveness. This is demonstrated by Jesus' words on the cross, 'Father, forgive them, for they know not what they do.'
[... more]