"In the beginning was the Word, and the Word was with God, and the Word was God. He was in the beginning with God. All things were made through him, and without him was not any thing made that was made. In Him was life, and the life was the Light of men. The Light shines in the darkness, and the darkness has not overcome it."
"You are the Light of the world. A city set on a hill cannot be hidden. Nor do people light a lamp and put it under a basket, but on a stand, and it gives light to all in the house. In the same way, let your Light shine before others, so that they may see your good works and give glory to your Father who is in heaven."
"...at one time you were darkness, but now you are Light in the Lord. Walk as children of Light (for the fruit of Light is found in all that is good and right and true), and try to discern what is pleasing to the Lord. Take no part in the unfruitful works of darkness, but instead expose them."