Jesus’ statement in Matthew 5:17-18 makes clear His relationship to the Law of Moses and the Prophets. The verses after Matthew 5:18 get more specific, contrasting Jesus’ teaching with many common interpretations of the Law and Prophets. “You have heard that it was said…,” He begins, and then concludes, “But I tell you.…” Jesus revealed the true intent of the Old Testament, rather than its legalistic interpretations.
Jesus is often called the “new Moses”, the “new Solomon”, and the “new Prophet”. His teachings found in His Sermon on the Mount/Sermon on the Plain (see Matthew 5:1-7:29; Luke 6:20-49) explains what God truly expects of His people. With His wisdom teachings (e.g., Matthew 11 - 13), Jesus becomes the new Solomon and the new Prophet with His many prophecies (e.g., Matthew 23 - 25). Essentially, Jesus’ life and His teaching covers the entire Hebrew Old Testament and its three section (the Law, the Prophets and the Writings).