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8 He that committeth sin, This word, to commit, or to do, refers also to outward works, so that the meaning is, that there is no life of God and of Christ, where men act perversely and wickedly, but that such are, on the contrary, the slaves of the devil; and by this way of speaking he sets forth more fully how unlike they are to Christ. For as he has before represented Christ as the fountain of all righteousness, so now, on the other hand, he mentions the devil as the beginning of sin. He denied that any one belongs to Christ except he who is righteous and shews himself to be such by his works; he now assigns to the devil all others, and subjects them to his government, in order that we may know that there is no middle condition, but that Satan exercises his tyranny where the righteousness of Christ possesses not the primacy.

There are not however two adverse principles, such as the Manicheans have imagined; for we know that the devil is not wicked by nature or by creation, but became so through defection. We know also that he is not equal to God, so that he can with equal right or authority contend with him, but that he is unwillingly under restraint, so that he can do nothing except at the nod and with the permission of his Creator. John, in the last place, in saying that some were born of God and some of the devil, imagined no tradition such as the Manicheans dreamt of; but he means that the former are governed and guided by the Spirit of God, and that the others are led astray by Satan, as God grants to him this power over the unbelieving.

For the Devil sinneth from the beginning As before he spoke not of Christ personally, when he said that he is righteous, but mentioned him as the fountain and the cause of righteousness; so now, when he says that the Devil sins, he includes his whole body, even all the reprobate; as though he had said, this belongs to the Devil, to entice men to sin. It hence follows, that his members, and all who are ruled by him, give themselves up to commit sin. But the beginning which the Apostle mentions, is not from eternity, as when he says that the Word is from the beginning, for there is a wide difference between God and creatures. Beginning as to God, refers to no time. Since, then, the Word was always with God, you can find no point of time in which he began to be, but you must necessarily admit his eternity. But here John meant no other thing than that the Devil had been an apostate since the creation of the world, and that from that time he had never ceased to scatter his poison among men.

For this purpose the Son of God was manifested He repeats in other words what he had before said, that Christ came to take away sins. Hence two conclusions are to be drawn, that those in whom sin reigns cannot be reckoned among the members of Christ, and that they can by no means belong to his body; for wherever Christ puts forth his own power, he puts the Devil to flight as well as sin. And this is what John immediately adds; for the next sentence, where he says that those who sin not are born of God, is a conclusion from what is gone before. It is an argument drawn from what is inconsistent, as I have already said; for the kingdom of Christ, which brings righteousness with it, cannot admit of sin. But I have already said what not to sin means. He does not make the children of God wholly free from all sin; but he denies that any can really glory in this distinction, except those who from the heart strive to form their life in obedience to God.

The Pelagians, indeed, and the Catharians did formerly make a wrong use of this passage, when they vainly imagined that the faithful are in this world endued with angelic purity; and in our own age some of the Anabaptists have renewed this dotage. But all those who dream of a perfection of this kind, sufficiently shew what stupid consciences they must have. But the words of the Apostle are so far from countenancing their error, that they are sufficient to confute it.