Why was the law given if it cannot save?

According to Galatians 3:19, the law was added because of transgressions, serving as a guardian until Christ came. The law exposes the sinful nature of humanity, showing us our inability to attain righteousness on our own. In this sense, the law's purpose is not to provide salvation but to highlight our need for a Savior. It leads us to Christ, where we find justification by faith, escaping the curse of the law through His grace. Thus, while the law itself cannot save, it plays a critical role in God's redemptive plan by directing us to the One who can.