Jesus talks about the Laws that Moses gave to the Jews
17 Jesus said, ‘You should not think that I have come to destroy God's Law. Also, I have not come to destroy the messages that God's prophets wrote down. No, I have not come to destroy their words. I have come to make what they taught become true. 18 I tell you this: One day, even the earth and the sky will finish. But while they remain, God's Law will also remain. Nobody can remove even the smallest thing from it. The Law will remain until everything in it has happened.
19 A person may choose not to obey a rule in God's Law. He may think it is the least important rule. He may also teach other people to think like that. Then God will call him the least important person in the kingdom of heaven. But a person may choose to obey all the rules in God's Law. And he may teach other people to obey them too. Then God will call that person great in the kingdom of heaven. 20 I tell you this: You must always do what is right. You must live in a way that is better than the teachers of God's Law and the Pharisees. You will never come into the kingdom of heaven if you do not do better than them.’
5:20The teachers of God's Law and the Pharisees thought that they obeyed every rule in the Law. But they did not do it because they loved God. They wanted other people to think well of them.