How do we know that grace is the only way to salvation?

The gospel message consistently emphasizes that salvation is solely by grace through faith, not by works. Paul illustrates this in Galatians by contrasting the two covenants: the covenant of works signals bondage and death, while the covenant of grace signifies freedom and life. Romans 11:6 tells us, 'And if by grace, then it is no longer of works; otherwise grace is no longer grace.' This proclamation speaks to the heart of the Reformed faith, affirming that God's promises are fulfilled independently of our merits. Ultimately, it is through the finished work of Christ on the cross that the need for personal righteousness is fully satisfied, thereby granting us access to salvation.