What is the purpose of the law according to Galatians?

In Galatians 3:19, Paul states, 'Wherefore then serveth the law? It was added because of transgressions.' This declaration reveals that the law was instituted not as a means to achieve righteousness but to expose our sinful nature and the need for a Savior. The law functions as a schoolmaster, leading us to Christ by demonstrating our complete inability to achieve the righteousness that God requires. When believers recognize their shortcomings through the law, they are drawn towards the grace and mercy found in Christ, understanding that redemption comes solely through Him.