John 1:9

“That was the true light, etc.] Christ is that light, that famous and excellent light, the fountain of all light to all creatures; that gave light to the dark earth at first, and spoke light out of darkness; that light of all men in the earth, and of all the angels in heaven, and of all the saints below, and of all the glorified ones above: he is the true light, in distinction from typical lights; the “Urim” of the former dispensation; the candlestick, with the lamps of it; the pillar of fire which directed the Israelites by night in the wilderness; and from all the typical light there was in the institutions and sacrifices of the law; and in opposition to the law itself, which the Jews f24…”

“lighteth every man, &c.--rather, "which, coming into the world, enlighteneth every man"; or, is "the Light of the world" (Joh 9:5). "Coming into the world" is a superfluous and quite unusual description of "every man"; but it is of all descriptions of Christ amongst the most familiar, especially in the writings of this Evangelist (Joh 12:46; Joh 16:28; Joh 18:37; Jo1 4:9; Ti1 1:15, &c.).”

“That was the true Light - Not John, but the Messiah. He was not a false, uncertain, dangerous guide, but was one that was true, real, steady, and worthy of confidence. A false light is one that leads to danger or error, as a false beacon on the shores of the ocean may lead ships to quicksands or rocks; or an “ignis fatuus” to fens, and precipices, and death. A true light is one that does not deceive us, as the true beacon may guide us into port or warn us of danger. Christ does not lead astray. All false teachers do. That lighteth - That enlightens. He removes darkness, error, ignorance, from the mind. Every man - This is an expression denoting, in general, the whole human race - Jews and…”

“Who lighteth every man - By what is vulgarly termed natural conscience, pointing out at least the general lines of good and evil. And this light, if man did not hinder, would shine more and more to the perfect day. John 1:10”

“the true: Joh 1:4, Joh 6:32, Joh 14:6, Joh 15:1; Isa 49:6; Mat 6:23; Jo1 1:8, Jo1 2:8, Jo1 5:20 every: Joh 1:7, Joh 7:12, Joh 12:46; Isa 8:20; Th1 5:4-7 John 1:10”