In the beginning was the Word, and the Word was with God, and the Word was God. He was with God in the beginning.
Through him all things were made; without him nothing was made that has been made. In him was life, and that life was the light of men. The light shines in the darkness, but the darkness has not understood it.
There came a man who was sent from God; his name was John. He came as a witness to testify concerning that light, so that through him all men might believe. He himself was not the light; he came only as a witness to the light. The true light that gives light to every man was coming into the world.
Notice that Jesus is called "the light" seven times in this short passage. Now, as John is showing us Christ as both man AND deity, he uses the word "light" to explain that Jesus is like a beacon, showing us the WAY. We will know Him because He is completely opposite from the darkness around Him. John wants us to be sure that we don't miss Him! Jesus represents the light of wisdom, the light of recognition about who God is, and the light of eternal life. John (the disciple) also mentions the forerunner, John the Baptist, who will reflect Christ but not BE the light. Many people wondered if John the Baptist was the Savior and John 1:6-8 clarifies that Jesus is the ONE, the LIGHT. - teachingmom.com