Matthew 5:16

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.