'Lamps' in the Bible

"Have your girdles on, and let your lamps be alight;

So Judas, followed by the battalion and by a detachment of the Temple police sent by the High Priests and Pharisees, came there with torches and lamps and weapons.

Now there were a good many lamps in the room upstairs where we all were,

Out from the throne there came flashes of lightning, and voices, and peals of thunder, while in front of the throne seven blazing lamps were burning, which are the seven Spirits of God.

"These witnesses are the two olive-trees, and they are the two lamps which stand in the presence of the Lord of the earth.