He that believeth on Him is not condemned; but he that believeth not is condemned already, because he hath not believed in the name of the only-begotten Son of God." Moreover, when John (the Baptist) was asked what he happened to know of Jesus, he said: "The Father loveth the Son, and hath given all things into His hand.
(Hom. xxviii. 1) Because however He says this, slothful men in the multitude of their sins, and excess of carelessness, abuse God's mercy, and say, There is no hell, no punishment; God remits us all our sins. But let us remember, that there are two advents of Christ; one past, the other to come. The former was, not to judge but to pardon us: the latter will be, not to pardon but to judge us. It is of the former that He says, I have not come to judge the world. Because He is merciful, instead of judgment, He grants an internal remission of all sins by baptism; and even after baptism opens to us the door of repentance, which had He not done all had been lost; for all have sinned, and come short of the glory of God. (Rom. 3:23) Afterwards, however, there follows something about the punishment of unbelievers, to warn us against flattering ourselves that we can sin with impunity. Of the unbeliever He says, 'he is judged already.'—But first He says, He that believeth on Him is not judged. He who believeth, He says, not who enquires. But what if his life be impure? Paul very strongly declares that such are not believers: They confess, he says, that they know God, but in works deny Him. (Tit. 1:16) That is to say, Such will not be judged for their belief, but will receive a heavy punishment for their works, though unbelief will not be charged against them.
(Hom. xxviii. 1) Or the meaning is, that disbelief itself is the punishment of the impenitent: inasmuch as that is to be without light, and to be without light is of itself the greatest punishment. Or He is announcing what is to be. Though a murderer be not yet sentenced by the Judge, still his crime has already condemned him. In like manner he who believes not, is dead, even as Adam, on the day that he ate of the tree, died.
For there are two Advents of Christ, that which has been, and that which is to be; and the two are not for the same purpose; the first came to pass not that He might search into our actions, but that He might remit; the object of the second will be not to remit, but to enquire. Therefore of the first He saith, "I came not to condemn the world, but to save the world"; but of the second, "When the Son shall have come in the glory of His Father, He shall set the sheep on His right hand, and the goats on His left." And they shall go, these into life; and these into eternal punishment. Yet His former coming was for judgment, according to the rule of justice. Why? Because before His coming there was a law of nature, and the prophets, and moreover a written Law, and doctrine, and ten thousand promises, and manifestations of signs, and chastisements, and vengeances, and many other things which might have set men right, and it followed that for all these things He would demand account; but, because He is merciful, He for a while pardons instead of making enquiry. For had He done so, all would at once have been hurried to perdition. For "all," it saith, "have sinned, and come short of the glory of God." Seest thou the unspeakable excess of His lovingkindness?
Yet if He "came not to judge the world," how is "he that believeth not judged already," if the time of "judgment" has not yet arrived? He either means this, that the very fact of disbelieving without repentance is a punishment, (for to be without the light, contains in itself a very severe punishment,) or he announces beforehand what shall be. For as the murderer, though he be not as yet condemned by the decision of the judge, is still condemned by the nature of the thing, so is it with the unbeliever. Since Adam also died on the day that he ate of the tree; for so ran the decree, "In the day that ye eat of the tree, ye shall die"; yet he lived. How then "died" he? By the decree; by the very nature of the thing; for he who has rendered himself liable to punishment, is under its penalty, and if for a while not actually so, yet he is by the sentence.
Lest any one on hearing, "I came not to judge the world," should imagine that he might sin unpunished, and should so become more careless, Christ stops such disregard by saying, "is judged already"; and because the "judgment" was future and not yet at hand, He brings near the dread of vengeance, and describes the punishment as already come. And this is itself a mark of great lovingkindness, that He not only gives His Son, but even delays the time of judgment, that they who have sinned, and they who believe not, may have power to wash away their transgressions.
"For God sent not His Son into the world to judge the world, but that the world through Him may be saved." So far, then, as it lies in the physician, He is come to heal the sick. He that will not observe the orders of the physician destroys himself. He is come a Saviour to the world: why is He called the Saviour of the world, but that He is come to save the world, not to judge the world? Thou wilt not be saved by Him; thou shalt be judged of thyself.
(Tr. xii. c. 12) For why is He called the Saviour of the world, but because Ho saves the world? The physician, so far as his will is concerned, heals the sick. If the sick despises or will not observe the directions of the physician, he destroys himself.
Having plainly called Himself the Son of God the Father, He thought not good to leave the word without witness, but brings forward proof from the quality, so to say, of the things themselves, making the hearers more steadfast unto faith. For I was not sent, saith He, like the law-expounder Moses, condemning the world by the law, nor introducing the commandment unto conviction of sin, nor do I perform a servile ministry, but I introduce loving-kindness befitting the Master: I free the embondaged, as Son and Heir of the Father, I transform the law that condemneth into grace that justifieth, I release from sin him that is holden with the cords of his transgressions, I am come to save the world, not to condemn it. For it was right, it was right, saith He, that Moses, as a servant, should be a minister of the law that condemns, but that I as Son and God should free the whole world from the curse of the law and, by exceedingness of lovingkindness, should heal the infirmity of the world. If then the grace that justifieth is better than the commandment that condemneth, how is it not meet to conceive that He surpasseth the measure of the servant Who introduceth so God-befitting authority, and releaseth man from the bonds of sin?
This then is one aim of the passage under consideration, and no mean one. A second besides this, revolving through the same circuit, and introducing a consideration akin to those above, will be given from love of learning. The Saviour saw that Nicodemus was cleaving to the law of Moses, and was fast held to the more ancient commandment, and was somehow startled at the new Birth through the Spirit, shrinking from the new and Gospel polity, supposing it seems that this would be more burdensome than the things already enjoined. Being therefore not ignorant, as God, of the fear which from his ignorance had sprung upon him, by using one short argument, He frees him from all trouble on this score, and shows that the commandment of Moses, by reason of its condemning the world, is harder to be borne, and introduces Himself as a mild Judge, saying, For God sent not His Son into the world to condemn the world, but that the world through Him might be saved.
Truly through the Son of God shall the world have life; for for no other cause came He into the world, except to save the world. God sent not His Son into the world to condemn the world, but that the world through Him might be saved.
[AD 220] Tertullian on John 3:17