Matthew 5:16-18

16 You must be sure that your light shines well. Then you will give light to other people. They will see all the good things that you do. Then they will praise God, who is your Father in heaven.’

5:15At this time, people burned oil in a dish to make a light. They called this a lamp.
5:16Jesus is teaching his disciples about how they must live in a good way. They must show people the truth about God.

Jesus talks about God's Law

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 spoke. 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.