We use lights to make visibility.
A Christian should so shine in his life. His conversation should be such that all who are about him should clearly perceive whose he is, and whom he serves; and should see the image of Jesus reflected in his daily actions.
Lights are intended for guidance
We are to help those around us who are in the dark.
We are to hold forth to them the Word of life.
We are to point sinners to the Saviour, and the weary to a divine resting-place.
Lights are also used for warning.
Christians should know that there are many false lights shown everywhere in the world, and therefore the right light is needed. The wreckers of Satan are always abroad, tempting the ungodly to sin under the name of pleasure; they hoist the wrong light, be it ours to put up the true light upon every dangerous rock, to point out every sin, and tell what it leads to, that so we may be clear of the blood of all men, shining as lights in the world.
Lights also have a very cheering influence, and so have Christians. A Christian ought to be a comforter, with kind words on his lips, and sympathy in his heart; he should carry sunshine wherever he goes, and diffuse happiness around him.
Philippians 2 : 15
so that you may become blameless and pure, children of God without fault in a crooked and depraved generation, in which you shine like stars in the universe
(0062) 4 March 2007