'Light' in the Bible

Because it is the God who spoke that out of darkness light should shine who has shone in our hearts for the shining forth of the knowledge of the glory of God in the face of Jesus Christ.

For our momentary and light affliction works for us in surpassing measure an eternal weight of glory;

Be not diversely yoked with unbelievers; for what participation is there between righteousness and lawlessness? or what fellowship of light with darkness?

And it is not wonderful, for Satan himself transforms himself into an angel of light.