What is the purpose of the law according to the Bible?

The Bible presents the law as having a crucial role in demonstrating humanity's inability to achieve righteousness on their own. As stated in Romans 3:20, the law gives knowledge of sin, making it clear that by the deeds of the law, no flesh shall be justified before God. The law exists to silence all excuses and show everyone their guilt before a holy God. It reveals our sinful nature and need for divine grace rather than providing a means to attain righteousness. Therefore, the law underscores the foundational need for Christ, who fulfills the law and offers us acceptance through faith.