How do we know that Christ fulfills the law?

Jesus explicitly states in Matthew 5:17-18 that He did not come to abolish the law but to fulfill it. He kept every commandment perfectly and satisfied the law's requirements by bearing the penalty for sin in His own body. Luke 24:44 reinforces this truth, as Jesus mentions that all things written in the law and the prophets concerning Him must be fulfilled. The fulfillment of the law through Christ assures us that He provides the righteousness we need to be justified before God, confirming that our acceptance is based on His merits, not our own.