Ephesians 5:8-9

for you were formerly darkness, but now you are light in the Lord; walk as children of light (for the fruit of the light consists in all goodness and righteousness and truth),

John 1:4-9

In Him was life, and the life was the light of men. And the light shines in the darkness, and the darkness did not comprehend it. There came a man sent from God, whose name was John. He came for a witness, that he might bear witness of the light, that all might believe through him. He was not the light, but came that he might bear witness of the light. There was the true light which, coming into the world, enlightens every man.

Colossians 1:12-13

giving thanks to the Father, who has qualified us to share in the inheritance of the saints in light. For He delivered us from the domain of darkness, and transferred us to the kingdom of His beloved Son,