Revelation 11:4
"These witnesses are the two olive-trees, and they are the two lamps which stand in the presence of the Lord of the earth.
Matthew 5:14-16
*You* are the light of the world; a town cannot be hid if built on a hill-top.
Luke 11:33
"When any one lights a lamp, he never puts it in the cellar or under the bushel, but on the lampstand, that people who come in may see the light.
Romans 11:17
And if some of the branches have been pruned away, and you, although you were but a wild olive, have been grafted in among them and have become a sharer with others in the rich sap of the root of the olive tree,
Revelation 1:20
the secret meaning of the seven stars which you have seen in My right hand, and of the seven lampstands of gold. The seven stars are the ministers of the seven Churches, and the seven lampstands are the seven Churches.