1 John i. 5
First of all, he represents God under an image which they had doubtless often heard from his own m1outh, as he too had received it from the lips of Christ: "God is light, and in him is no darkness." His nature is light; from Him all darkness is excluded. He is the opposite of all darkness. Light, in the Holy Scriptures, and especially in the writings of John, is often used as the image of the Divine; darkness, on the other hand as the image of the Undivine. Truth, holiness, bliss, all these may be designated as light, since they all belong to the nature of the Divine; as falsehood, wickedness, and misery form the characteristics of the Undivine. What is particularly represented by the image of light in this passage, will appear from the exhortation which is founded on it. It enjoins a course of life contrary to all that is unholy, and the ground-thought must therefore be, that the nature of God is holiness; all that is unholy is alien to him.