Matthew 5:13-16 - The Sermon On The Mount: Salt And Light
13 Ye are the salt of the earth; and if the salt may lose its savor, in what shall it be salted? It is yet without value, except having been cast out, to be trodden under feet by the people.
14 Ye are the light of the world. A city sitting on a mountain is unable to be hidden. 15 Neither do they light a candle, and place it under a bushel, but on the candlestick; and it shineth to all who are in the house. 16 Let your light so shine before the people, in order that they may see your good works, and glorify your Father who is in the heavens.