“While you have the light, believe in the light, that you may become sons of light.”
Jesus was in constant battle with unbelief during his ministry. The Light of God had come to earth and yet some people refused to believe in him. Why do some believe and others do not? In this verse, Jesus puts the responsibility for belief squarely on the recipient of the light. Note his use of the personal pronoun, “you have the light” and “you may become”. The precondition to becoming a child of light is first having light, that is the light of Christ. If the light is present, then believing in the light (Jesus Christ) joins one to the light (child of light). Jesus also told us that we are the light of the world, not exactly like him, but carriers of his light. And while we remain true to him, this dark world has his light. Men and women can still become children of light if they believe in the light of Jesus. For this reason, if you are a child of the light, let your light shine.