Why is understanding the law's purpose important for Christians?

Understanding the purpose of the law is vital for Christians because it helps clarify the relationship between faith and works. The law cannot save or justify; it only exposes sin and shows that we are in need of grace. By recognizing our inability to fulfill the law's demands, we learn to rely on Christ's perfect obedience and sacrificial death for our salvation. This realization prevents self-righteousness and promotes true humility before God. It acknowledges that our justification and righteousness come only through faith in Jesus, not by our own works or adherence to the law.