A lighthouse shining its light on the dark sea at night leads ships safely to the port. God wants us to shine our light on the world like this lighthouse. Then how can we shine our light on this world? When a man full of discontent towards society changes to become joyful and thankful in the word of God, he can be like the light. When a family full of discord changes to be at peace in faith or when someone receives healing of an incurable disease by depending on God, they can become like the light. Those who witness the light will be guided to the living God and accept Jesus Christ, the light of the world.