Why is understanding the law essential for Christians?

In the Reformed tradition, the law serves a critical purpose in our spiritual lives. It functions as a mirror reflecting our inability to achieve righteousness on our own (Galatians 3:10). As demonstrated in Matthew 19, Jesus emphasizes that to gain eternal life through the law, one must keep all commandments (Matthew 19:17). This presents an impossible standard for fallen man. Hence, the law leads us to recognize our sin (Romans 7:7) and drives us to seek the grace that is found in Christ, who fulfilled the law and offers us redemption (Romans 8:3-4). Understanding the law underscores the necessity of Christ's work for salvation.