Then spake Jesus again unto them, saying, I am the light of the world: he that followeth me shall not walk in darkness, but shall have the light of life. ... As long as I am in the world, I am the light of the world. ... I am come a light into the world, that whosoever believeth on me should not abide in darkness. -- John 8:12; 9:5; 12:46
Ye are the light of the world. A city that is set on an hill cannot be hid. ... Let your light so shine before men, that they may see your good works, and glorify your Father which is in heaven. -- Matthew 5:14, 16
Take heed therefore that the light which is in thee be not darkness. -- Luke 11:35