People often offer the story of the rich man and Lazarus in the 16th chapter of Luke as evidence of God's justice and eternal punishment...Where is the justice in this story? Even when judged by the command of an "eye for an eye, and a tooth for a tooth," the rich man's sentence seems excessive. How do we justify punishing a lifetime of sin with an eternity of suffering? At what point are the scales balanced?
I can accept that repentance and transformation may require some to experience the misery they caused...Perhaps Hitler will repent only after experiencing some of the agony he wrought. Or perhaps he'll discover what I've discovered -- the deepest pain is the inward awareness of the hurt I've caused others. Regardless, I am unable to see how the eternal punishment of anyone could bring glory to God.
Love and punishment are not mutually exclusive. But parental punishment is never designed to inflict pain. It desires to redeem, shape, or protect. When it is excessive, it becomes abuse. Eternal punishment contradicts even the harshest concepts of justice. It defies God's commitment to restoring all things.
Fortunately, a violent and vengeful final Judgment is not the only Biblical image of our ultimate destiny. Paul writes, "He [God] has made known to us the mystery of his will according to his good pleasure, which he purposed in Christ, to put into effect when the times will have reached their fullness -- to bring all things in heaven and on earth together under one head, even Christ." (Eph. 1:9-10)
Justice is the end rather than the means. it is the result of God's gracious kingdom, not the tool to bring it about. It is making all things as they were intended to be.
Taken from If Grace is True, Gulley and Mulholland, Harper 2003, pp. 81-83