The problem here is the obvious lack of understanding of the infinite nature of sin as contrasted to the infinite righteousness of God. If the slightest sin is infinite in its significance, then it also demands infinite punishment as a divine judgment. Though it is common for all Christians to wish that there were some way out of the doctrine of eternal punishment because of its inexorable and unyielding revelation of divine judgment, one must rely in Christian faith on the doctrine that God is a God of infinite righteousness and well as infinite love. While on the one hand He bestows infinite grace to those who trust Him, He must, on the other hand, inflict eternal punishment on those who spurn His grace.
John Walvoord