'Light' in the Bible

Because the god of this world has made blind the minds of those who have not faith, so that the light of the good news of the glory of Christ, who is the image of God, might not be shining on them.

Seeing that it is God who said, Let light be shining out of the dark, who has put in our hearts the light of the knowledge of the glory of God in the face of Jesus Christ.

Do not keep company with those who have not faith: for what is there in common between righteousness and evil, or between light and dark?

And it is no wonder; for even Satan himself is able to take the form of an angel of light.