Why is justification by grace alone important for Christians?

The importance of justification by grace alone lies in its fundamental role in the believer's assurance and standing before God. The doctrine emphasizes that no action or work on our part can earn salvation; it is solely based on Christ's perfect obedience and sacrifice. Paul illustrates this in Galatians, where he contrasts the law's inability to justify us with the grace extended through faith in Christ. This understanding prevents self-righteousness and promotes humility since it establishes that it is not our merit but Christ's work that secures our salvation. Furthermore, reliance on grace alone keeps the focus on God's sovereignty and mercy, offering a profound sense of security and peace to believers, knowing that their salvation rests on His unchanging promise.