'Light' in the Bible

for you were at one time darkness, but now you are light in the Lord. Walk as children of the light --

for the fruit of the light consists in all goodness, righteousness, and truth --

But all things being exposed by the light are made evident.

For everything made evident is light, and for this reason it says: "Awake, O sleeper! Rise from the dead, and Christ will shine on you!"