1-5 Jesus, the Word, created "all things".
6-13 Jesus, the Word, is the source of "life" for all men, it shines in the darkness of men, and cannot be put out, ever! Jesus, the Word and the Light, was the Life and Light for man's Salvation.
14-18 Jesus, the Word, Who was with God in the beginning, came to the earth. He became God/man, the perfect sacrifice.