'Light' in the Bible

And he said to them, When the light comes in, do people put it under a vessel, or under the bed, and not on its table?

There is nothing covered which will not be seen openly, and nothing has been made secret which will not come to light.

But in those days, after that time of trouble, the sun will be made dark and the moon will not give her light,

And Peter had come after him at a distance, even into the house of the high priest; and he was seated with the captains, warming himself in the light of the fire.