"In him was life; and the life was the light of men" (John 1:4). This follows logically from what has been said in the previous verse. If Christ created all things He must be the Fountain of life. He is the Life-Giver. We understand "life" to be used here in its widest sense. Creature life is found in God, for "in him we live and move and have our being"; spiritual life or eternal life, and resurrection life, are also found "in Him." If it be objected that the Greek word for "life" here is "zoe," and that zoe has exclusive reference to spiritual life, we answer, Not always: see Luke 12:15; Luke 16:25 (translated "life-time"), Acts 17:25, etc., where, in each case, "zoe" has reference to human (natural) life, as such. Thus, "zoe" includes within its scope all "life."
"And the Life was THE LIGHT of men." What are we to understand by this? Notice two things: this statement in verse 4 follows immediately after the declaration that "all things were made" by Christ, so that it is creatures, as such, which are here in view; second, it is "men," as men, not only believers, which are here referred to. The "life" here is one of the Divine titles of the Lord Jesus, hence, it is equivalent to saying, "God was the light of men." It speaks of the relation which Christ sustains to men, all men—He is their "light." This is confirmed by what we read in verse 9, "That was the true light, which lighteth every man that cometh into the world." In what sense, then, is Christ as "the life" the "light of men?" We answer, In that which renders men accountable creatures. Every rational man is morally enlightened. All rational men "show the work of the law written in their hearts, their conscience also bearing witness" (Rom. 2:15). It is this "light," which lightens every man that cometh into the world, that constitutes them responsible human beings. The Greek word for "light" in John 1:4 is "phos," and that it is not restricted to spiritual illumination is plainly evident from its usage in Matthew 6:23, "If therefore the light that is in thee be darkness, how great is that darkness," and also see Luke 11:35; Acts 16:29, etc.
Let no reader infer from what has been said that we are among the number who believe the unscriptural theory that there is in every man a spark of Divine life, which needs only to be fanned, to become a flame. No, we expressly repudiate any such satanic lie. By nature, spiritually, he is "dead in trespasses and sins." Yet, notwithstanding, the natural man is a responsible being before God, to Whom he shall give an account of himself; responsible, because the work of God’s law is written in his heart, his conscience also bearing witness, and this, we take it, is the "light" which is referred to in John 1:4, and the "lighteneth" in John 1:9."And the light shineth in darkness; and the darkness comprehended it not" (John 1:5). This gives us still another of the Divine titles of Christ. In verse 1 He is spoken of as "the word." In verse 3 as the Maker of all things. In verse 4 as "the life." Now, in verse 5 as "the light." With this should be compared 1 John 1:5 where we read "God is light." The conclusion, then, is irresistible, the proof complete and final, that the Lord Jesus is none other than God, the second Person in the Holy Trinity.
The "Englishman’s Greek New Testament" renders the last clause of John 1:5 as follows—"and the light in the darkness appears, and the darkness it apprehended not." This tells us of the effects of the Fall. Every man that comes into this world is lightened by his Creator, but the natural man disregards this light, he repels it, and in consequence, is plunged into darkness. Instead of the natural man "living up to the light he has" (which none ever did) he "loves darkness rather than light" (John 3:19). The unregenerate man, then, is like one that is blind—he is in the dark. Proof of this appears in the fact that "the Light in the darkness appears, and the darkness apprehended it not." All other darkness yields to and fades away before light, but here "the darkness" is so impenetrable and hopeless, it neither apprehends nor comprehends. What a fearful and solemn indictment of fallen human nature! And how evident it is that nothing short of a miracle of saving grace can ever bring one "out of darkness into God’s marvelous light."