1 John 2:18

Know ye therefore, that every lie is from without, and is not of the truth. Who is a liar, but he that denieth that Jesus is the Christ? This is Antichrist.".
foreseeing by the Spirit those weak-minded persons who should be led astray.

To those, on the other hand, who under a pious cloak blaspheme by their continence both the creation and the holy Creator, the almighty, only God, and teach that one must reject marriage and begetting of children, and should not bring others in their place to live in this wretched world, nor give any sustenance to death, our reply is as follows. We may first quote the word of the apostle John: "And now are many antichrists come, whence we know that it is the last hour. They went out from us, but they were not of us. For if they had been of us, they would have remained with us."

And how is it that he enjoins duties which belong to our God, and enjoins them to be offered to none other than our God? Either contend that the devil works with our God, or else let the Paraclete be held to be Satan. But you affirm it is "a human Antichrist: "for by this name heretics are called in John. And how is it that, whoever he is, he has in (the name of) our Christ directed these duties toward our Lord; whereas withal antichrists have (ever) gone forth (professedly teaching) towards God, (but) in opposition to our Christ? On which side, then, do you think the Spirit is confirmed as existing among us; when He commands, or when He approves, what our God has always both commanded and approved? But you again set up boundary-posts to God, as with regard to grace, so with regard to discipline; as with regard to gifts, so, too, with regard to solemnities: so that our observances are supposed to have ceased in like manner as His benefits; and you thus deny that He still continues to impose duties, because, in this case again, "the Law and the prophets (were) until John.

And the apostles, who speak of God, in establishing the truth of the advent of the Lord Jesus Christ, have each of them indicated the appearing of these abominable and ruin-working men, and have openly announced their lawless deeds. First of all Peter, the rock of the faith, whom Christ our God called blessed, the teacher of the Church, the first disciple, he who has the keys of the kingdom, has instructed us to this effect: "Know this first, children, that there shall come in the last days scoffers, walking after their own lusts. And there shall be false teachers among you, who privily shall bring in damnable heresies." After him, John the theologian, and the beloved of Christ, in harmony with him, cries, "The children of the devil are manifest; and even now are there many antichrists; but go not after them. Believe not every spirit, because many false prophets are gone out into the world." And then Jude, the brother of James, speaks in like manner: "In the last times there shall be mockers, walking after their own ungodly lusts. There be they who, without fear, feed themselves." You have observed the concord of the theologians and apostles, and the harmony of their doctrine.

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. And yet He did not rebuke them when they went away, nor even severely threaten them; but rather, turning to His apostles, He said, "Will ye also go away? " manifestly observing the law whereby a man left to his own liberty, and established in his own choice, himself desires for himself either death or salvation. Nevertheless, Peter, upon whom by the same Lord the Church had been built, speaking one for all, and answering with the voice of the Church, says, "Lord, to whom shall we go? Thou hast the words of eternal life; and we believe, and are sure that Thou art the Christ, the Son of the living God: " signifying, doubtless, and showing that those who departed from Christ perished by their own fault, yet that the Church which believes on Christ, and holds that which it has once learned, never departs from Him at all, and that those are the Church who remain in the house of God; but that, on the other hand, they are not the plantation planted by God the Father, whom we see not to be established with the stability of wheat, but blown about like chaff by the breath of the enemy scattering them, of whom John also in his epistle says, "They went out from us, but they were not of us; for if they had been of us, no doubt they would have continued with us." Paul also warns us, when evil men perish out of the Church, not to be disturbed, nor to let our faith be lessened by the departure of the faithless. "For what," he says, "if some of them have departed from the faith? Hath their unbelief made the faith of God of none effect? God forbid! For God is true, but every man a liar."

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. For what can be ratified and established by God which is done by them whom the Lord calls His enemies and adversaries? setting forth in His Gospel, "He that is not with me is against me; and he that gathereth not with me, scattereth." And the blessed Apostle John also, keeping the commandments and precepts of the Lord, has laid it down in his epistle, and said, "Ye have heard that antichrist shall come: even now there are many Antichrists; whereby we know that it is the last time. They went out from us, but they were not of us; for if they had been of us, no doubt they would have continued with us." Whence we also ought to gather and consider whether they who are the Lord's adversaries, and are called antichrists, can give the grace of Christ. Wherefore we who are with the Lord, and maintain the unity of the Lord, and according to His condescension administer His priesthood in the Church, ought to repudiate and reject and regard as profane whatever His adversaries and the antichrists do; and to those who, coming out of error and wickedness, acknowledge the true faith of the one Church, we should give the truth both of unity and faith, by means of all the sacraments of divine grace. We bid you, dearest brethren, ever heartily farewell.

These things are not said of all who teach false doctrine but only of those who join a false sect after they have heard the truth. It is because they were once Christians that they are now called antichrists.

Why is the lamb offered up in the evening and not during the day? The reason is plain enough, for our Lord and Savior suffered his passion at the close of the ages, which is why John called it the last hour.

Let us recall how long ago it was that John said that it is the last hour. If we had been alive then and had heard this, how could we have believed that so many years would pass after it, and would we not rather have hoped that the Lord would come while John was still present in the body?

"Children, it is the last hour." In this lesson he addresses the children that they may make haste to grow, because "it is the last hour." Age or stature of the body is not at one's own will. A man does not grow in respect of the flesh when he will, any more than he is born when he will: but where the being born rests with the will, the growth also rests with the will. No man is "born of water and the Spirit, except he be willing. Consequently if he will, he grows or makes increase: if he will, he decreases. What is it to grow? To go onward by proficiency. What is it to decrease? To go backward by deficiency. Whoso knows that he is born, let him hear that he is an infant; let him eagerly cling to the breasts of his mother, and he grows apace. Now his mother is the Church; and her breasts are the two Testaments of the Divine Scriptures. Hence let him suck the milk of all the things that as signs of spiritual truths were done in time for our eternal salvation, that being nourished and strengthened, he may attain to the eating of solid meat, which is, "In the beginning was the Word, and the Word was with God, and the Word was God." Our milk is Christ in His humility; our meat, the selfsame Christ equal with the Father. With milk He nourisheth thee, that He may feed thee with bread: for with the heart spiritually to touch Christ is to know that He is equal with the Father.

But lest any be sluggish to go forward, let him hear: "Children, it is the last hour." Go forward, run, grow; "it is the last hour." This same last hour is long; yet it is the last. For he has put "hour" for "the last time;" because it is in the last times that our Lord Jesus Christ is to come. But some will say, How the last times? how the last hour? Certainly antichrist will first come, and then will come the day of judgment. John perceived these thoughts: lest people should in a manner become secure, and think it was not the last hour because antichrist was to come, he said to them, "And as ye have heard that antichrist is to come, now are there come many antichrists." Could it have many antichrists, except it were "the last hour"?

The antichrist will come at the end of the world, and the heresies have already announced his coming, for they are his friends and brothers, since they both blaspheme Christ.

And as you have heard, that Antichrist comes, etc. He calls heretics Antichrists; but also those who, by perverse actions, destroy the Catholic faith which they profess, are rightly called Antichrists, that is, contrary to Christ; who all bear witness to that great Antichrist who will come at the end of the age, as to their head. Whence also Paul says of that one that the mystery of iniquity is already at work (II Thess. II).

My little children, it is the last hour. The last hour, the last time of the age, which is now being carried out, he says, according to that parable of the Lord, where he narrates that workers in the vineyard are hired from the first hour, the third, the sixth, the ninth, and the eleventh. For at the first hour those who cultivated the vineyard of the Lord were serving the will of their Creator either by teaching or by living rightly from the beginning of the age. From the third hour, those from the times of Noah. From the sixth hour, those from the times of Abraham. From the ninth hour, those from the times the law was given. From the eleventh hour, those from the times of the Lord's Incarnation until the end of the age, are serving the heavenly commands: in which hour, both the coming of the Savior in the flesh and the future plague of the Antichrist, who would fight against the heralds of salvation, was marked by the prediction of the prophets. Whence it follows:

Whence we know that it is the last hour. How do we know? Because many Antichrists have come. It can also be understood this way, that he says it was already then the last hour, because the persecution of that time, which was brought by heretics, had a great similarity to that last persecution which is to come just before the day of judgment, although this one only harassed the Church with foul tongues, that one will torment with fierce swords.

Little children, it is the last hour: and as you have heard that the Antichrist is coming, even now many antichrists have come, by which we know that it is the last hour.
"it is the last hour." In this way, the discourse can be more easily understood: Since the Catholic Epistle is suited to each person regardless of the time, and there is no prescribed end of life for each individual, yet each one has an uncertain end, it is rightly applied to each one's end, so that, as the final time of life that threatens each individual, forethought and sobriety may follow: and thus a life irreproachable and pure may always be conducted in actions by Christians. Nor does any madman have a place for mocking this, if it has been said for so many years: it is the last hour, and yet until now it has not been measured or calculated that last moment. Indeed, if you compare the span of time from the creation of the world, how much has been elapsed from that time until now? I mean the time since Christ was born.
Furthermore, if anything is divided into three parts, namely the first, the middle, and the last, whatever follows from the middle can certainly be called the last without any absurdity. Certainly, if the Lord came according to the middle of ten thousand years (since His coming to earth was almost in the fifth millennium), whatever follows from this, as that which follows the middle, could be justifiably called the extreme and the last; for instance, from a hundred years, even the first, namely ten or twenty, and so on for the subsequent ones, could be called the last.
Therefore, here too, since the time of the Lord's coming had passed through the middle of the thousand years, whatever follows from this can rightly be called the last or extreme. This is therefore most true, even according to John Chrysostom [Easter Sermon]. The last or extreme can also be understood as the worst, as when we say: He has reached the extreme of evil. Therefore, since the world was then shaken by great evils, the Devil developing these things after the coming of that Savior, whether for the temptation of the good or for the confusion of those things which are better, so that no one could discern what was good and what was not good: for this reason, that time is called the last hour, as it brings forth that which is worst, when it has the character of the most foul and thickest waste.
However, it confirms that it is the last hour, or the worst, even according to the substance of time from the Antichrist. For if we expect the Antichrist, he says, in the last times, but now many antichrists are present in this life (he mentions Cerinthus and those like him), it is evident that the time of the end is imminent, while many antichrists precede one and prepare the way for him. Then John adds to this saying whom the antichrists have come, namely that they are from among us, etc.