Matthew 5:14-16 ASV

14 Ye are the light of the world. A city set on a hill cannot be hid.
15 Neither do [men] light a lamp, and put it under the bushel, but on the stand; and it shineth unto all that are in the house.
16 Even so let your light shine before men; that they may see your good works, and glorify your Father who is in heaven.