By offering salvation through grace in the form of Christ's death, which satisfies the eternal curse, God provides saints with the opportunity to experience grace and be judged under one law. If God responded to the sin of Adam by meting out an equivalent punishment to all sinners, He would be liable for judging unfairly, since some sinners are worse than others. However, by offering salvation through grace, He declares that sin is not as serious as it assuredly is. This offers sinners the opportunity to be judged under one law, instead of being punished unfairly according to their individual sinfulness.  This is an opportunity that should not be missed.God demonstrates His commitment to upholding the authority of the moral law by punishing sinners. If He simply allowed sinners to go unpunished, He would be going back on His promises to use sin as a means of punishing those who break His laws. This would be contradictory to His moral character, because He would be effectively demanding the death of a substitute instead of the sinners. By punishing Christ, God is demonstrating His commitment to upholding the authority of the moral law. The fact that God would have to curse sinners in order to uphold the eternal covenant He made with them would preclude Him from fulfilling that covenant in an equitable way. Allowing sinners to continue to sin would be the only way for God to uphold the covenant, and this would only be possible if He cursed all of them. As a result, eternal salvation can only be attained through the curse of God.