'Light' in the Bible

and have persuaded yourself that, as for you, you are a guide to the blind, a light to those who are in darkness,

But if our unrighteousness sets God's righteousness in a clearer light, what shall we say? (Is God unrighteous--I speak in our everyday language-- when He inflicts punishment?

But now a righteousness coming from God has been brought to light apart from any Law, both Law and Prophets bearing witness to it--

Did then a thing which is good become death to me? No, indeed, but sin did; so that through its bringing about death by means of what was good, it might be seen in its true light as sin, in order that by means of the Commandment the unspeakable sinfulness of sin might be plainly shown.

The night is far advanced, and day is about to dawn. We must therefore lay aside the deeds of darkness, and clothe ourselves with the armour of Light.

but has now been brought fully to light, and by the command of the God of the Ages has been made known by the writings of the Prophets among all the Gentiles to win them to obedience to the faith--