How does Christ fulfill the law perfectly for believers?

Christ perfectly fulfills the law by adhering to its every command, something no human could achieve due to sin. Hebrews 10:7 indicates that Christ came to do the will of God, which included living a life of perfect obedience to the law's requirements. Furthermore, He offered Himself as the ultimate sacrifice to atone for the sins of His people. This dual fulfillment—perfect obedience and sacrificial atonement—guarantees that those who are united with Christ are imputed with His righteousness, thus fulfilling the law on their behalf and securing their salvation.