John 3:19-21

Ver 19. And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil. 20. For every one that does evil hates the light, neither comes to the light, lest his deeds should be reproved. 21. But he that does truth comes to the light, that his deeds may be made manifest, that they are wrought in God.

ALCUIN. Here is the reason why men believed not, and why they are justly condemned; This is the condemnation, that light is come into the world.

CHRYS. As if He said, So far from their having sought for it, or labored to find it, light itself has come to them, and they have refused to admit it; Men loved darkness rather than light, Thus He leaves them no excuse. He came to rescue them from darkness, and bring them to light; who can pity him who does not choose to approach the light when it comes unto him?

BEDE; He calls Himself the light, whereof the Evangelist speaks, That was the true light; whereas sin He calls darkness.

CHRYS. Then because it seemed incredible that man should prefer light to darkness, he gives the reason of the infatuation, viz. that their deeds were evil. And indeed had He come to Judgment, there had been some reason for not receiving Him; for he who is conscious of his crimes, naturally avoids the judge. But criminals are glad to meet one who brings them pardon. And therefore it might have been expected that men conscious of their sins would have gone to meet Christ, as many indeed did; for the publicans and sinners came and sat down with Jesus. But the greater part being too cowardly to undergo the toils of virtue for righteousness' sake, persisted in their wickedness to the last; of whom our Lord says, Every one that does evil, hates the light. He speaks of those who choose to remain in their wickedness.

ALCUIN. Every one that does evil, hates the light; i.e. he who is resolved to sin, who delights in sin, hates the light, which detects his sin.

AUG. 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 hate her discrimination; and therefore it follows, Neither comes to the light, that his deeds should be reproved.

CHRYS. No one reproves a Pagan, because his own practice agrees with the character of his gods; his life is in accordance with his doctrines. But a Christian who lives in wickedness all must condemn. If there are any Gentiles whose life is good, I know them not. But are there not Gentiles? it may be asked. For do not tell me of the naturally amiable and honest; this is not virtue. But show me one who has strong passions, and lives with wisdom. You cannot. For if the announcement of a kingdom, and the threats of hell, and other inducements, hardly keep men virtuous which they are so, such calls will hardly rouse them to the attainment of virtue in the first instance. Pagans, if they do produce any thing which looks well, do it for vain-glory's sake, and will therefore at the same time, if they can escape notice, gratify their evil desires as well. And what profit is a man's sobriety and decency of conduct, if he is the slave of vain-glory? The slave of vain-glory is no less a sinner than a fornicator; nay, sins even oftener, and more grievously. However, even supposing there are some few Gentiles of good lives, the exceptions so rare do not affect my argument.

BEDE; Morally too they love darkness rather than light, who when their preachers tell them their duty, assail them with calumny. But he that does truth comets to the light, that his deeds may be made manifest, that they are wrought in God.

CHRYS. He does not say this of those who are brought up under the Gospel, but of those who are converted to the true faith from Paganism or Judaism. He shows that no one will leave a false religion for the true faith, till he first resolve to follow a right course of life.

AUG. 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.

AUG. 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?