And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil.
All Commentaries on John 3:19 Go To John 3
Augustine of Hippo
AD 430
Because they dislike being deceived, and like to deceive, they love light for discovering herself, and hate her for discovering them. Wherefore it shall be their punishment, that she shall manifest them against their will, and herself not be manifest unto them. They love the brightness of truth, they hateher discrimination; and therefore it follows, Neither comes to the light, that his deeds should be reproved.
He calls the works of him who comes to the light, wrought in God; meaning that his justification is attributable not to his own merits) but to God’s grace.
But if God has discovered all men’s works to be evil, how is it that any have done the truth, and come to the light, i.e. to Christ? Now what He said is, that they loved darkness rather than light; He lays the stress upon that. Many have loved their sins, many have confessed them. God accuses your sins; if you accuse them too, you are joined to God. You must hate your own work, and love the work of God in you. The beginning of good works, is the confession of evil works, and then you does the truth: not soothing, not flattering yourself. And you are come to the light, because this very sin in you, which displeases you, would not displease you, did not God shine upon you, and His truth show it to you. And let those even who have sinned only by word or thought, or who have only exceeded in things allowable, do the truth, by making confession, and come to the light by performing good works. For little sins, if suffered to accumulate, become mortal. Little drops swell the river: little grains of sand become an heap, which presses and weighs down. The sea coming in by little and little, unless it be pumped out, sinks the vessel. And what is to pump out, but by good works, mourning, fasting, giving and forgiving, to provide against our sins overwhelming us?