I have thought a lot about light recently. As followers of Jesus, we are to live as children of the Light. Our Light is the Lamb of God, Jesus, Our Savior.
When I think of "light", I think of a candle. A candle stands with its flame exposed to the surroundings, completely vulnerable. This picture is a great parallel to how we should live our lives. Vulnerable, exposed, ready to experience the environment around us while we stand confident that our Light is an everlasting light.
This is a little scary, or maybe really scary, thinking about risking our reputation, well being, health, comfort, etc. But if we want to live as Jesus lived (which we can because we have His Spirit living in us), then we have to live in the Truth of who we are, good or bad.
This is what Paul says about "light" in Ephesians 5:8-14:
So, as we live in the Light, more Truth will be exposed, not only in us but others as well.
For once you were full of darkness, but now you have light from the Lord. So live as people of light! For this light within you produces only what is good and right and true.
Carefully determine what pleases the Lord. Take no part in the worthless deeds of evil and darkness; instead, expose them. It is shameful even to talk about the things that ungodly people do in secret. But their evil intentions will be exposed when the light shines on them, for the light makes everything visible. This is why it is said,
“Awake, O sleeper,
rise up from the dead,
and Christ will give you light.”
Don't hide your candle under a bushel!