But others understand it differently, and say that the sin of blasphemy against the Holy Ghost, is a sin committed against that good which is appropriated to the Holy Ghost: because goodness is appropriated to the Holy Ghost, just a power is appropriated to the Father, and wisdom to the Son. Hence they say that when a man sins through weakness, it is a sin "against the Father"; that when he sins through ignorance, it is a sin "against the Son"; and that when he sins through certain malice, i.e. through the very choosing of evil, as explained above (I-II, Q. 78, AA. 1, 3), it is a sin "against the Holy Ghost."
Now this may happen in two ways. First by reason of the very inclination of a vicious habit which we call malice, and, in this way, to sin through malice is not the same as to sin against the Holy Ghost. In another way it happens that by reason of contempt, that which might have prevented the choosing of evil, is rejected or removed; thus hope is removed by despair, and fear by presumption, and so on, as we shall explain further on (QQ. 20, 21). Now all these things which prevent the choosing of sin are effects of the Holy Ghost in us; so that, in this sense, to sin through malice is to sin against the Holy Ghost.
Reply Obj. 1: Just as the confession of faith consists in a protestation not only of words but also of deeds, so blasphemy against the Holy Ghost can be uttered in word, thought and deed.
Reply Obj. 2: According to the third interpretation, blasphemy against the Holy Ghost is condivided with blasphemy against the Son of Man, forasmuch as He is also the Son of God, i.e. the "power of God and the wisdom of God" (1 Cor. 1:24). Wherefore, in this sense, the sin against the Son of Man will be that which is committed through ignorance, or through weakness.
Reply Obj. 3: Sin committed through certain malice, in so far as it results from the inclination of a habit, is not a special sin, but a general condition of sin: whereas, in so far as it results from a special contempt of an effect of the Holy Ghost in us, it has the character of a special sin. According to this interpretation the sin against the Holy Ghost is a special kind of sin, as also according to the first interpretation: whereas according to the second, it is not a species of sin, because final impenitence may be a circumstance of any kind of sin. _______________________
SECOND ARTICLE [II-II, Q. 14, Art. 2]
Whether It Is Fitting to Distinguish Six Kinds of Sin Against the
Holy Ghost?
Objection 1: It would seem unfitting to distinguish six kinds of sin against the Holy Ghost, viz. despair, presumption, impenitence, obstinacy, resisting the known truth, envy of our brother's spiritual good, which are assigned by the Master (Sent. ii, D, 43). For to deny God's justice or mercy belongs to unbelief. Now, by despair, a man rejects God's mercy, and by presumption, His justice. Therefore each of these is a kind of unbelief rather than of the sin against the Holy Ghost.
Obj. 2: Further, impenitence, seemingly, regards past sins, while obstinacy regards future sins. Now past and future time do not diversify the species of virtues or vices, since it is the same faith whereby we believe that Christ was born, and those of old believed that He would be born. Therefore obstinacy and impenitence should not be reckoned as two species of sin against the Holy Ghost.
Obj. 3: Further, "grace and truth came by Jesus Christ" (John 1:17). Therefore it seem that resistance of the known truth, and envy of a brother's spiritual good, belong to blasphemy against the Son rather than against the Holy Ghost.