What does the Bible say about the relationship between the law and sin?

The Apostle Paul explains in Romans that the law has dominion over man as long as he lives, serving to reveal sin rather than to justify. For example, Romans 3:20 states, 'By the law is the knowledge of sin.' The law's purpose is not to provide salvation but to demonstrate our need for grace, as it brings awareness and conviction of sin. It showcases the reality of sin in our lives, making us aware of our shortcomings and highlighting our need for the grace found in Christ, who fulfilled the law on our behalf.