Luke 12:10

After deterring His disciples from denial of Himself, He adds an admonition to fear blasphemy: "Whosoever shall speak against the Son of man, it shall be forgiven him; but whosoever shall speak against the Holy Ghost, it shall not be forgiven him." Now, if both the remission and the retention of sin savour of a judicial God, the Holy Ghost, who is not to be blasphemed, will belong to Him, who will not forgive the, blasphemy; just as He who, in the preceding passage, was not to be denied, belonged to, Him who would, after He had killed, also cast into hell.

In the Gospel, the Lord speaks saying, “Everyone who acknowledges me before men, I will also acknowledge him before my Father who is in heaven; but whoever denies me, even I will deny him.” He does not deny him who denies or acknowledge him who acknowledges. The gospel cannot be firm in part and waver in part. Either both must be strong or both must lose the force of truth. If those who deny will not be guilty of a crime, those who acknowledge him will not receive the reward of virtue. If he crowns the faith that has conquered, he must punish the treachery that has been conquered. If the gospel can be broken, the martyrs can be of no benefit. If the gospel cannot be broken, they who become martyrs, according to the gospel, cannot act contrary to the gospel. Most beloved brothers and sisters, let no one defame the dignity of the martyrs. Let no one destroy their glories and crowns. The strength of an uncorrupted faith is sound. No one can say or do anything against Christ whose hope, faith, virtue and glory are entirely in Christ. They who have performed the commands of God cannot be the authors of anything done by the bishops contrary to the command of God.

But what will be more glorious than to have the only-begotten Word of God Himself to bear witness in our behalf at the divine judgment, and by His own love to draw forth as a recompense for confession, a declaration upon that soul to whom He bears witness, For not as abiding without him to whom He bears witness, but as dwelling in him and filling him with light, He will give His testimony. But having confirmed them with good hope by so great promises, He again rouses them by more alarming threats, saying, But he that denieth me before men, shall be denied before the Angels of God.

He rightly declares this threatening, in order that none should refuse to confess Him by reason of the punishment, which is to be denied by the Son of God, to be disowned by Wisdom, to fall away from life, to be deprived of light, and to lose every blessing; but all these things to suffer before God the Father who is in heaven, and the Angels of God.

(Ep. 4. ad Serap.) The ancients indeed, the learned Origen and the great Theognostus, describe this to be the blasphemy against the Holy Ghost, when they who have been counted worthy of the gift of the Holy Spirit in Baptism, fall back into sin. For they say that for this reason they can not obtain pardon; as Paul says, It is impossible for those who have been made partakers of the Holy Ghost to renew them again, &c. (Heb. 6:4.)
But each adds his own explanation. For Origen gives this as his reason; God the Father indeed penetrates and contains all things, but the power of the Son extends to rational things only; the Holy Spirit is only in those who partake of Him in the gift of Baptism. When then catechumens and heathens sin, they sin against the Son who abideth in them, yet they may obtain pardon when they become worthy of the gift of regeneration. But when the baptized commit sin, he says that their offence touches the Spirit, after coming to whom they have sinned, and therefore their condemnation must be irrevocable.
But Theognostus says, that he who has gone beyond both the first and second threshold deserves less punishment, but he who has also passed the third, shall no more receive pardon. By the first and second threshold, he speaks of the doctrine of the Father and the Son, but by the third the partaking of the Holy Spirit. According to St. John, When the Spirit of truth is come, he will lead you into all truth. (John 16:13.) Not as though the doctrine of the Spirit was above that of the Son, but because the Son condescends to those who are imperfect, but the Spirit is the seal of those who are perfect. If then not because the Spirit is above the Son, blasphemy against the Spirit is unpardonable; but because remission of sin is indeed to the imperfect, but no excuse remains to the perfect, therefore since the Son is in the Father, He is in those in whom the Father and the Spirit are not absent, for the Holy Trinity cannot be divided. Besides this, if all things were made by the Son, and all things consist in Him, He will Himself be truly in all; so that it must needs be, that he who sinneth against the Son, sinneth against the Father also, and against the Holy Spirit. But holy Baptism is given in the name of the Father, and the Son, and the Holy Spirit. And so they that sin after baptism commit blasphemy against the holy Trinity. But if the Pharisees had not received baptism, how did He condemn them as if they had spoken blasphemy against the Holy Spirit, of which they were not yet partakers, especially since He did not accuse them simply of sin, but of blasphemy? But these differ, for he who sins transgresses the Law, but he who blasphemes offends against the Deity Himself. But again, if to those who sin after baptism there is no remission of the punishment of their offences, how does the Apostle pardon the penitent at Corinth; (2 Cor. 11:10) but he travails in birth of the backsliding Galatians until Christ be formed again in them. (Gal. 4:19.)
And why also do we oppose Novatus, who does away with repentance after baptism? The Apostle to the Hebrews does not thus reject the repentance of sinners, but lest they should suppose that as according to the rites of the Law, under the veil of repentance there could be many and daily baptisms, he therefore warns them indeed to repent, but tells them that there could be only one renewal, namely, by Baptism. But with such considerations I return to the dispensation (οἰκονομίαν) which is in Christ, who being God was made man; as very God raised the dead; as clothed with the flesh, thirsted, laboured, suffered. When any then, looking to human things, see the Lord athirst or in suffering, and speak against the Saviour as if against a man, they sin indeed, yet may speedily on repentance receive pardon, alleging as excuse the weakness of His body. And again when any, beholding the works of Deity, doubt concerning the nature of our Lord's body, they also sin grievously. But these too if they repent may be quickly pardoned, seeing that they have an excuse in the greatness of the works. But when they refer the works of God to the Devil, justly do they undergo the irrevocable sentence, because they have judged God to be the Devil, and the true God to have nothing more in His works than the evil spirits. To this unbelief then the Pharisees had come. For when the Saviour manifested the works of the Father, raising the dead, giving sight to the blind, and such like deeds, they said that these were the works of Beelzebub. As well might they say, looking at the order of the world and the providence exercised over it, that the world was created by Beelzebub. As long then as regarding human things they erred in knowledge, saying, Is not this the carpenter's son, and how knoweth this man things which he never learnt? He suffered them as sinning against the Son of man; but when they wax more furious, saying that the works of God are the works of Beelzebub, He no longer endured them. For thus also He endured their fathers so long as their murmurings were for bread and water; but when having found a calf, they impute to it the divine mercies they had received, they were punished. At first indeed multitudes of them were slain, afterwards He said indeed, Nevertheless, in the day when I visit I will visit their sin upon them. (Exod. 32:34.) Such then is the sentence passed upon the Pharisees, that in the flame prepared for the devil they shall be together with him everlastingly consumed. Not then to make comparison between a blasphemy spoken against Himself and the Holy Spirit said He these things, as if the Spirit were the greater, but each blasphemy being uttered against Him, He shows the one to be greater, the other less. For looking at Him as man they reviled Him, and said that His works were those of Beelzebub.

He has also well introduced faith, stimulating us to its confession, and to faith itself He has placed virtue as a foundation. For as faith is the incentive to fortitude, so is fortitude the strong support of faith.

Truly by the Son of Man we understand Christ, Who by the Holy Spirit was born of a virgin, seeing that His only parent on earth is the Virgin. What then, is the Holy Spirit greater than Christ, that they who sin against Christ should obtain pardon, while they who offend against the Holy Spirit are not thought worthy to obtain it? But where there is unity of power there is no question of comparison.

Thus it is thought by some that we should believe both the Son and the Holy Spirit to be the same Christ, preserving the distinction of Persons with the unity of the substance, since Christ both God and man is one Spirit, as it is written, The Spirit before our face, Christ the Lord; (Lam. 4:20.) the same Spirit is holy, for both the Father is holy, and the Son holy, and the Spirit holy. If then Christ is each, what difference is there except we know that it is not lawful for us to deny the divinay of Christ?

(Hom. 34. in Matt.) The Lord is not then content with an inward faith, but requires an outward confession, urging us to confidence and greater love. And since this is useful for all, He speaks generally, saying, Whosoever shall confess me, &c.

(ubi sup.) Both in condemnation a greater punishment is announced, and in blessing a greater reward; as if He said, Now you confess and deny, but I then, for a far greater recompense of good and evil awaits them in the world to come.

There are other modes also of denying which St. Paul describes, saying, They profess that they know God, but in works they deny him. (Tit. 1:16.) And again, If any provide not for his own, and specially for those of his own house, he hath denied the faith, and is worse than an infidel. (1 Tim. 5:8.) Also, Flee from covetousness, which is idolatry. (Col. 3:5.) Since then there are so many modes of denial, it is plain that there are many likewise of confession, which whosoever has practised, shall hear that most blessed voice with which Christ greets all who have confessed Him. But mark the precaution of the words. For in the Greek he says, Whosoever shall confess in Me, showing that not by his own strength, but by the aid of grace from above, a man confesses Christ. But of him who denies, He said not "in Me," but me. For though being destitute of grace he denies, he is nevertheless condemned, because the destitution is owing to him who is forsaken, or he is forsaken for his own fault.

(Hom. 33. in Matt.) But elsewhere it is said, Be ready to answer every one who shall ask you for a reason of the hope that is in you. When indeed a contest or strife arises among friends, He bids us take thought, but when there are the terrors of a court of justice and fear on every side, He gives His own strength so as to inspire boldness and utterance, but not dismay.

(Serm. 71.) Or if it were here said, "Who hath spoken any blasphemy whatever against the Holy Spirit," we ought then to understand thereby "all blasphemy;" but because it was said, who blasphemeth against the Holy Spirit, let it be understood of him that blasphemed not in any way, but in such a manner that it can never be pardoned him. For so when it was said, The Lord tempteth no man, (James 1:13.) that is not spoken of every, but only of a certain kind of temptation. Now what that kind of blasphemy against the Holy Spirit is, let us sec. The first blessing of believers is forgiveness of sins in the Holy Spirit. Against this free gift the impenitent heart speaks. Impenitence itself therefore is blasphemy against the Spirit, which is neither forgiven in this world, nor in that which is to come; for repentance gains that forgiveness in this world which is to avail in the world to come.

But if our Saviour means to imply, that if any injurious word is spoken by us against a common man, we shall obtain pardon if we repent, there is no difficulty in the passage, for since God is by nature merciful, He restores those who are willing to repent. But if the words are referred to Christ how is he not to be condemned who speaks a word against Him?

But if the Holy Spirit were a creature, and not of the divine substance of the Father and the Son, how does an injury committed against Him entail upon it so great a punishment as is denounced against those that blaspheme against God?

He has taught us that blasphemy is the most wicked crime for people to commit. He said that whoever speaks a word against the Son of man will be forgiven, but whoever blasphemes against the Holy Spirit will not be forgiven. In what way is this to be understood? If the Savior means that if any one of us uses any scornful word toward some mere man, he will receive forgiveness if he repents, the matter is free from all difficulty. Since God is by nature good, he will free from blame all those who repent. If the declaration has reference to Christ, the Savior of all, how can he who has spoken against him be innocent or secure from condemnation? Some one who has not learned the meaning of his mystery or understood that being by nature God he humbled himself to our estate and became man may say something blasphemous to a certain extent against him. If this is not so wicked as to pass forgiveness, God will pardon those who have sinned from ignorance.…On another hand, condemnation and the eternal punishment both in this world and in that which is to come is inevitable for those who have blasphemed the Godhead itself.
By “the Spirit,” he means not only the Holy Spirit but also the whole nature of the Godhead, as understood [to consist] in the Father, the Son and the Holy Spirit. The Savior also somewhere said, “God is a Spirit.” Blasphemy against the Spirit is against the whole supreme substance. The nature of the Deity, as offered for our understanding in the holy and adorable Trinity, is one.

It was said above, that every hidden work and word is to be revealed, but He now declares that this revelation is to take place in the presence of the heavenly city and the eternal Judge and King; saying, But I say unto you, Whosoever shall confess me, &c.

But lest from what He says, that those who have denied Him are to be denied, it should be supposed that the condition of all was alike, that is, both of those who deny deliberately, and those who deny from infirmity or ignorance, He immediately added, And whosoever shall speak a word against the Son of Man, it shall be forgiven him.

Or else; Whoso saith that the works of the Holy Spirit are those of Beelzebub, it shall not be forgiven him either in the present world, or in that which is to come. Not that we deny that if he could come to repentance he could be forgiven by God, but that we believe that such a blasphemer as by the necessity of his deserts he would never come to forgiveness, so neither to the fruits themselves of a worthy repentance; according to that, He hath blinded their eyes, so that they should not be converted, and I should heal them. (Isa. 6:10.)

Nor however are all they who say that the Spirit is not holy, or is not God, but is inferior to the Father and the Son, involved in the crime of unpardonable blasphemy, because they are led to do it through human ignorance, not a demoniacal hatred, as the rulers of the Jews were.

For when we are led for Christ's sake before judges, we ought to offer only our will for Christ, but in answering, the Holy Spirit will supply His grace, as it is added, For the Holy Spirit will leach you, &c.

And everyone who speaks a word against the Son of Man, it will be forgiven him. But he who blasphemes against the Holy Spirit, it will not be forgiven him. He who is scandalized by my flesh, considering me only a man because I have James, Joseph, and Judas as brothers, and that I am a human glutton and wine drinker, such opinion and blasphemy, though not free from the guilt of error, has pardon because of the benefit of the body. But he who, clearly understanding the works of God since he cannot deny their power, yet stirred by envy, slanders them, and says that Christ and the works of the Holy Spirit are of Beelzebub, this one will not be forgiven, neither in this age nor in the age to come. Not that we deny that even he, if he were able to repent, could be forgiven by Him who wills all men to be saved and to come to the knowledge of the truth, but we believe this blasphemer, due to his deserving merits, will never reach forgiveness nor the fruits of worthy repentance. As the evangelist John truly wrote about some who were blinded due to the merit of their blasphemy: Therefore they could not believe, because Isaiah said again: He has blinded their eyes and hardened their heart, lest they see with their eyes and understand with their heart, and turn, and I would heal them (John XII). Some indeed say that he who speaks the word or blasphemes against the Holy Spirit resists with an impenitent heart the unity of the Church where the forgiveness of sins is effected by the Holy Spirit, saying it is a remedy lest the blasphemy be irremissible, that an impenitent heart should be avoided. Of whom, many consider their opinion by no means firm, because obviously anyone who resists the unity of the Church with an impenitent heart, whether he is a Jew or a Gentile or even a heretic, can certainly have the remission of sins in the Holy Spirit, if he flees with a repentant heart to the unity of the Church. But they say that as long as someone resists the Spirit of grace with an impenitent heart, he does not have forgiveness. But the others object that this condition applies to all crimes. For as long as someone commits fornication, idolatry, adultery, male concubinage, theft, and other crimes, he does not have an inheritance in the kingdom of Christ and God; but once these crimes have been forsaken, he can be washed, sanctified, justified in the name of our Lord Jesus Christ and in the Spirit of our God; so, they say, an impenitent person as long as he has an impenitent heart cannot have forgiveness; but as soon as he repents, he will also obtain forgiveness. And impenitence is found to be no more binding or irremissible than any other sins, which, remaining until repentance, will be erased once repentance is performed. However, only blasphemy against the Holy Spirit, by which someone in the likeness of the devil and his angels does not shudder to attack the majesty of the Deity against his own conscience, does not have forgiveness eternally, but will be guilty of an eternal offense. As the evangelist Mark clearly explains, who, having placed this testimony of the Lord, added and said: Because they were saying, He has an unclean spirit. For neither those who do not believe that the Holy Spirit exists, nor those who believe that He exists but is not God, nor those who believe that He is God but inferior to the Father and the Son, because they act out of human ignorance rather than diabolical envy, are held by this crime of irremissible blasphemy. Therefore, the leaders of the Jews, and all those corrupted by a similar plague of envy, blaspheme the majesty, and will perish without end. Read the first book of the blessed Augustine on the Sermon of the Lord on the Mount.

Since then our weakness is twofold, and either from fear of punishment we shun martyrdom, or because we are ignorant and can not give a reason of our faith, he has excluded both; the fear of punishment in that He said, Fear not them which kill the body, but the fear of ignorance, when He said, Take no thought how or what ye shall answer, &c.

(inter.) Now he says, how, with respect to the manner of speaking, what, with respect to the manner of intention. How ye shall answer to those who ask, or what ye shall say to those who wish to learn.