Title: You are the light of the world
Light makes us see things as they are. Different sources of light emit this energy at diverse levels of intensity, but they all exhibit the same attribute, and that is to expose things as they are.
In the same manner, a Christian must never hide behind a veil of untruthfulness, but instead be the spring of illumination which brings enlightenment to those who have groped in darkness all their lives, with a radiance that can not be mistaken as emanating from any other direction but from God.