How do we know that Christ's obedience fulfilled the law?

The fulfillment of the law by Christ is confirmed throughout the scriptures, particularly in Romans 10:4, which states, 'For Christ is the end of the law for righteousness to everyone who believes.' In His life, Jesus exemplified perfect adherence to the moral law, and His actions were in accordance with God's commands. He affirmed that He did not come to abolish the law but to fulfill it (Matthew 5:17), indicating He would complete its requirements through His perfect obedience and sacrificial death.

Additionally, all Old Testament sacrifices pointed to the necessity of a perfect Lamb who would take away the sin of the world (John 1:29). In Psalm 40, verses 6-8, it emphasizes that God did not take pleasure in the sacrifices of animals since they could not remove sin effectively. Instead, when Christ came, He declared, 'Lo, I come to do thy will, O God,' embracing full obedience to the law on behalf of His people, culminating in the ultimate sacrifice of Himself. Thus, through His life and death, Christ perfectly fulfilled all righteousness.