How do we know that Christ fulfills the law and the prophets?

The New Testament makes clear that Christ is the fulfillment of the law and the prophets, as He embodies their teachings and promises. In Matthew 5:17, Jesus states that He came not to abolish the law but to fulfill it. His life and work demonstrate the righteousness demanded by the law, establishing a new covenant through His sacrifice. Furthermore, all the Old Testament prophecies point to Him as the Messiah who would deliver His people. By fulfilling these prophecies and embodying the law's requirements, Christ redefined how believers relate to God's commandments and established a way for us to be justified through faith in Him rather than through our works.