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 (Jn 8:12). How many ways is Christ the light and the life of the world? He is the light of truth, the light which shineth in darkness, and the darkness comprehendeth it not (DC 6:21). He is the intelligence of the world, for The glory of God is intelligence, or, in other words, light and truth (DC 93:36). He gives all of us the light of Christ, the light which shineth, which giveth you light, is through him who enlighteneth your eyes, which is the same light that quickeneth your understandings (DC 88:11). He is the literal giver of life through his light, The light…giveth life to all things, which is the law by which all things are governed, even the power of God (DC 88:13). He is the giver of life by virtue of the resurrection, I am the resurrection and the life: he that believeth in me, though he were dead, yet shall he live (Jn 11:25). Christ is the literal source of power for the light of the sun, moon, and stars, he is in the sun, and the light of the sun, and the power thereof by which it was made. As also he is in the moon, and is the light of the moon, and the power thereof by which it was made; As also the light of the stars, and the power thereof by which they were made (DC 88:7-9). Lastly, he will replace the sun as the source of light for the inhabitants of the celestial kingdom, the city had no need of the sun, neither of the moon, to shine in it: for the glory of God did lighten it, and the Lamb is the light thereof (Rev 21:23).
Joseph F. Smith
“But the thing for us to do is to live according to the light and intelligence that God has revealed to us in this dispensation, that we may be in harmony with the heavenly powers and with heavenly beings, and especially with our Lord Jesus Christ, who stands at our head, who is our lawgiver, our exemplar, and the way of life and salvation to all the world, through whom we may enter into the celestial kingdom of God, and without whom we can never enter that state of glory worlds without end. He is the way, the light and life of the world; and whosoever will obey the commandments He has given, and do the works which he has done, and commanded us to do, shall not walk in the darkness, but shall have in them the light of life.” (Journal of Discourses, vol 22, Jan. 29, 1882)
Ezra Taft Benson
"The babe of Bethlehem became the Nazarene, the Man of Galilee, the Life and Light of the world, the Savior and Redeemer of mankind, the miracle of all time. More books have been written about Him, more buildings have been erected to His honor, more men have died with His name on their lips than any other person who ever lived.
“I bear witness to you that Jesus is the Christ, the Savior and Redeemer of the world-the very Son of God. He was born the babe of Bethlehem. He lived and ministered among men. He was crucified on Calvary.” (The Teachings of Ezra Taft Benson, p. 12)