Why couldn't God just forgive us without Jesus dying?

This objection has a long history—it's essentially the argument made by the 16th-century theologian Faustus Socinus, who argued an all-powerful God could simply forgive sin directly, without requiring any death or payment first.

The medieval theologian Anselm had earlier argued, from a different direction, that sin is such a serious offense against God's infinite honor that it required a correspondingly serious satisfaction—something no human could provide, since humans already owe God perfect obedience anyway.

Responses to Socinus vary. Some argue God's own justice, not merely an external rule, requires that serious sin have real consequences—so cost-free forgiveness would compromise God's righteous character, not just his authority. Others, including the 17th-century theologian Hugo Grotius, argued God could uphold moral order through the cross without every detail functioning as strict, retributive punishment. This remains genuinely debated, not settled with one accepted answer.