Matthew 5:14
You people are [like] light in the world. A city built on a hill will not go unnoticed.
John 1:9
[Now] the true Light, who enlightens all mankind, was [indeed] coming into the world [i.e., to earth].
2 Peter 1:19
And we have the message of the prophets [confirmed to us] as more certain [than ever]. So, you will do well to pay careful attention to it, as [you would] to a lamp in a dark place, until the day dawns and the morning star rises in your hearts [Note: This probably refers to the beginning of the Gospel age, when people would become enlightened to its message].
Revelation 1:12
And I turned to see [whose] voice was speaking to me. And when I turned, I saw seven golden lampstands,
Revelation 1:20-1
The secret of the seven stars that you saw in my right hand and the seven golden lampstands [is this]: The seven stars are the angels [i.e., messengers] of the seven churches. And the seven lampstands are the seven churches."
Revelation 4:5
And lightning flashes and [loud] sounds of rolling thunder came out of God's throne. And there were seven lighted torches burning in front of the throne, which are the seven Spirits of God [i.e., the Holy Spirit. See 1:4].