Light, in the Scriptures, is the emblem of purity, truth, knowledge, prosperity, and happiness - as darkness is of the opposite. John here says that "God is light" ... not the light, or a light, but light itself; that is, he is himself all light and is the source and fountain of light in all worlds.
He is perfectly pure, without any admixture of sin. He has all knowledge, with no admixture of ignorance on any subject. He is infinitely happy, with nothing to make him miserable. He is infinitely true, never stating or countenancing error; he is blessed in all his ways, never knowing the darkness of disappointment and adversity.
[Barnes' Notes on The Bible]
1 John 1:5 ... This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all. ❤
