The parable of the lamp is one of the parables of the Kingdom in Marks Gospel. In Jesus time, a lamp was made of pottery in a dish-like shape and placed high, where it could give the most light.
In speaking of the lamp, Jesus reminds us that his teachings should be manifested to all. He asks us not to let pass the opportunities to tell others about him. As followers of Jesus, we are lighted lamps and our light should transform the darkness of life. Only in as far as our lamps are lighted can we make a difference in the world around us.
Only genuine rootedness in Jesus, the true Light, can keep our lamps constantly lit. How rooted are we in the True Light himself?