Matthew 5:13-16 - The Sermon On The Mount: Salt And Light
13 Ye are the salt of the earth, but if the salt be grown insipid, wherewith shall it be seasoned? it is no longer fit for any thing, but to be thrown out of doors, and trodden under foot.
14 Ye are the light of the world: a city, that is situated on a hill, cannot be hid. 15 Nor do men light a candle, to put it under a bushel, but on a candlestick: and then it giveth light to all in the house. 16 So let your light shine before men, that they may see your good works, and glorify your father, who is in heaven.