How do we know Jesus is the fulfillment of Old Testament law?

Jesus Christ is the fulfillment of the Old Testament law, as indicated in scripture such as Romans 10:4, which states, "For Christ is the end of the law for righteousness to everyone who believes." This means that the law served to point to Christ, who perfectly fulfilled it in His life and sacrificial death. The law was not merely a set of rules, but a shadow of the reality found in Christ. All the sacrifices and ordinances of the Old Testament were ultimately realized in Him, bringing an end to the law as a means of righteousness for believers, thus establishing grace as the new covenant.