They are exposed and judged by the light as lovers of darkness. And, lastly they teach us that only they that are doers of the truth come to the light. For we understand that when the Lord announces Himself as the light of the world He uses figurative language. And a rich and beautiful figure it is, indeed. In nature, physical light, the light which God called into being on the first day of creation week, is no doubt the indispensable condition for the existence, movement and life of all the rest of the world.
Light is movement, vibration, heat, fellowship, communion, revelation, is itself life.
Hence, when used in a spiritual sense in Holy Writ, it has a rich significance. It denotes spiritual, ethical perfection and life. That this is true is evident from the several passages in Scripture where the figure is employed, as well as from the use of its opposite and antithesis darkness. God is infinitely good and there is no evil in Him. He is the holy One, and there is no corruption in Him at all.