Why is it important for Christians to understand grace and not law?

The distinction between grace and law is foundational in Reformed theology. Galatians 4 contrasts two covenants: one based on law that leads to bondage and another based on grace that brings freedom. The Apostle Paul emphasizes that expecting a reward for law-keeping places one in debt, whereas grace is a gift from God. Without this understanding, Christians may strive in vain under the burden of law instead of resting in the completed work of Christ, who provides spiritual blessings and righteousness to believers freely.