How do we know that grace and law cannot mix?

According to the sermon, grace and law are fundamentally incompatible. The law outlines what we must do to be righteous, demanding absolute adherence as stated in Galatians 3:10. If one seeks justification through the law, they place themselves under a curse for failing to fulfill its requirements. In contrast, grace is a gift from God, provided through the sacrificial work of Christ, which acquits the believer from the demands of the law. Romans 11:6 points out that if salvation were by grace, it cannot be based on works, thus emphasizing the complete separation between the two. Mixing them would undermine both the holiness of the law and the fullness of God's grace.