12 Jesus once again addressed them: "I am the world's Light. No one who follows me stumbles around in the darkness. I provide plenty of light to live in." 13 The Pharisees objected, "All we have is your word on this. We need more than this to go on." 14 Jesus replied, "You're right that you only have my word. But you can depend on it being true. I know where I've come from and where I go next. You don't know where I'm from or where I'm headed. 15 You decide according to what you can see and touch. I don't make judgments like that. 16 But even if I did, my judgment would be true because I wouldn't make it out of the narrowness of my experience but in the largeness of the One who sent me, the Father.
Matthew Henry's Commentary on John 8:12-16
Commentary on John 8:12-16
(Read John 8:12-16)
Christ is the Light of the world. God is light, and Christ is the image of the invisible God. One sun enlightens the whole world; so does one Christ, and there needs no more. What a dark dungeon would the world be without the sun! So would it be without Jesus, by whom light came into the world. Those who follow Christ shall not walk in darkness. They shall not be left without the truths which are necessary to keep them from destroying error, and the directions in the way of duty, necessary to keep them from condemning sin.