1 John 2:19

Adversus autem alterurn genus hæreticorum, qui speciose per continentiam impie se gerunt, tum in creaturam, tum in sanctum Opificem, qui est solus Deus omnipotens; et dicunt non esse admittendum matrimonium et liberorum procreationem, nec in mundum esse inducendos alios infelices futuros, nec suppeditandum morti nutrimenturn, hæc sunt opponenda: primum quidem illud Joannis: “Et nunc antichristi multifacti sunt, unde scimus quod novissima hora est. Ex nobis exierunt, sed non erant ex nobis. Nam si fuissent ex nobis, permansissent utique nobiscum.” Deinde sunt etiam evertendi, et dissolvenda, quæ ab eis afferuntur, hoc modo: “Salomæ interroganti, quousque vigebit mors,” non quasi vita esset mala, et mala creatura, “Dominus, Quoadusque, inquit, vos mulieres paritis,” sed quasi naturalem docens consequentiam: ortum enim omnino sequitur interitus. …

Ver. 19 . “They went out from us; but they were not of us”, neither the apostate angels, nor men falling away; “but that they may be manifested that they are not of us.” With sufficient clearness he distinguishes the class of the elect and that of the lost, and that which remaining in faith “has an unction from the Holy One,” which comes through faith. He that abideth not in faith.

7. Nor ought it, my dearest brother, to disturb any one who is faithful and mindful of the Gospel, and retains the commands of the apostle who forewarns us; if in the last days certain persons, proud, contumacious, and enemies of God’s priests, either depart from the Church or act against the Church, since both the Lord and His apostles have previously foretold that there should be such. Nor let any one wonder that the servant placed over them should be forsaken by some, when His own disciples forsook the Lord Himself, who performed such great and wonderful works, and illustrated the attributes of God the Father by the testimony of His doings. …

3. But it is to approve the baptism of heretics and schismatics, to admit that they have truly baptized. For therein a part cannot be void, and part be valid. If one could baptize, he could also give the Holy Spirit. But if he cannot give the Holy Spirit, because he that is appointed without is not endowed with the Holy Spirit, he cannot baptize those who come; since both baptism is one and the Holy Spirit is one, and the Church founded by Christ the Lord upon Peter, by a source and principle of unity, is one also. Hence it results, that since with them all things are futile and false, nothing of that which they have done ought to be approved by us. …

1. Cyprian to Magnus his son, greeting. With your usual religious diligence, you have consulted my poor intelligence, dearest son, as to whether, among other heretics, they also who come from Novatian ought, after his profane washing, to be baptized, and sanctified in the Catholic Church, with the lawful, and true, and only baptism of the Church. Respecting which matter, as much as the capacity of my faith and the sanctity and truth of the divine Scriptures suggest, I answer, that no heretics and schismatics at all have any power or right. For which reason Novatian neither ought to be nor can be expected, inasmuch as he also is without the Church and acting in opposition to the peace and love of Christ, from being counted among adversaries and antichrists. …

9. Therefore also the Holy Spirit came as a dove, a simple and joyous creature, not bitter with gall, not cruel in its bite, not violent with the rending of its claws, loving human dwellings, knowing the association of one home; when they have young, bringing forth their young together; when they fly abroad, remaining in their flights by the side of one another, spending their life in mutual intercourse, acknowledging the concord of peace with the kiss of the beak, in all things fulfilling the law of unanimity. This is the simplicity that ought to be known in the Church, this is the charity that ought to be attained, that so the love of the brotherhood may imitate the doves, that their gentleness and meekness may be like the lambs and sheep. …

To Titus: “A man that is an heretic, after one rebuke avoid; knowing that one of such sort is perverted, and sinneth, and is by his own self condemned.” Of this same thing in the Epistle of John: “They went out from among us, but they were not of us; for if they had been of us, they would doubtless have remained with us.” Also in the second to Timothy: “Their word doth creep as a canker.”

29. It is to the Church also that the answer is given immediately after in the passage quoted above: “If thou know not thyself, O thou fairest among women, go thy way forth by the footsteps of the flocks, and feed thy kids beside the shepherds’ tents.” Oh, matchless sweetness of the Bridegroom, who thus replied to her question: “If thou knowest not thyself,” He says; as if He said, “Surely the city which is set upon a mountain cannot be hid; and therefore, ‘Thou art not as one veiled, that thou shouldst run to the flocks of my companions.’ For I am the mountain established upon the top of the mountains, unto which all nations shall come. …

Now the devil was thus bound not only when the Church began to be more and more widely extended among the nations beyond Judea, but is now and shall be bound till the end of the world, when he is to be loosed. Because even now men are, and doubtless to the end of the world shall be, converted to the faith from the unbelief in which he held them. And this strong one is bound in each instance in which he is spoiled of one of his goods; and the abyss in which he is shut up is not at an end when those die who were alive when first he was shut up in it, but these have been succeeded, and shall to the end of the world be succeeded, by others born after them with a like hate of the Christians, and in the depth of whose blind hearts he is continually shut up as in an abyss. …

Some think that the Apostle Paul referred to the Roman empire, and that he was unwilling to use language more explicit, lest he should incur the calumnious charge of wishing ill to the empire which it was hoped would be eternal; so that in saying, “For the mystery of iniquity doth already work,” he alluded to Nero, whose deeds already seemed to be as the deeds of Antichrist. And hence some suppose that he shall rise again and be Antichrist. Others, again, suppose that he is not even dead, but that he was concealed that he might be supposed to have been killed, and that he now lives in concealment in the vigor of that same age which he had reached when he was believed to have perished, and will live until he is revealed in his own time and restored to his kingdom. But I wonder that men can be so audacious in their conjectures. …

26. Who is that adulterous woman whom the prophet Hosea points out, who said, "I will go after my lovers, that give me my bread and my water, my wool and my flax, and everything that befits me?" Let us grant that we may understand this also of the people of the Jews that went astray; yet whom else are the false Christians (such as are all heretics and schismatics) wont to imitate, except false Israelites? For there were also true Israelites, as the Lord Himself bears witness to Nathanael, "Behold an Israelite indeed, in whom is no guile." But who are true Christians, save those of whom the same Lord said, "He that hath my commandments, and keepeth them, he it is that loveth me?" But what is it to keep His commandments, except to abide in love? Whence also He says, "A new commandment I give unto you, that ye love one another;" and again, "By this shall all men know that ye are my disciple …

Chapter 21. 29. But as to what he says, that "he who comes to the Church is to be baptized and renewed, that within he may be hallowed through the holy," what will he do, if within also he meets with those who are not holy? Or can it be that the murderer is holy? And if the reason for his being baptized in the Church is that "he should put off this very thing also that he, being a man that sought to come to God, fell, through the deceit of error, on one profane," where is he afterwards to put off this, that he may chance, while seeking a man of God within the Church itself, to have fallen, through the deceit of error, on a murderer? If "there cannot be in a man something that is void and something that is valid," why is it possible that in a murderer the sacrament should be holy and his heart unholy? If "whosoever cannot give the Holy Spirit cannot baptize," why does the murderer baptize …