imagination, without heeding to the meaning of
those words: this is a venial sin, and is not a blasphemy properly so
called. In the second way, by adverting to the meaning of his words,
and to their blasphemous nature: in which case he is not excused from
mortal sin, even as neither is he who, in a sudden movement of anger,
kills one who is sitting beside him.
_______________________

THIRD ARTICLE [II-II, Q. 13, Art. 3]

Whether the Sin of Blasphemy Is the Greatest Sin?

Objection 1: It would seem that the sin of blasphemy is not the
greatest sin. For, according to Augustine (Enchiridion xii), a thing
is said to be evil because it does harm. Now the sin of murder, since
it destroys a man's life, does more harm than the sin of blasphemy,
which can do no harm to God. Therefore the sin of murder is more
grievous than that of blasphemy.

Obj. 2: Further, a perjurer calls upon God to witness to a falsehood,
and thus seems to assert that God is false. But not every blasphemer
goes so far as to say that God is false. Therefore perjury is a more
grievous sin than blasphemy.

Obj. 3: Further, on Ps. 74:6, "Lift not up your horn on high," a
gloss says: "To excuse oneself for sin is the greatest sin of all."
Therefore blasphemy is not the greatest sin.

_On the contrary,_ On Isa. 18:2, "To a terrible people," etc. a gloss
says: "In comparison with blasphemy, every sin is slight."

_I answer that,_ As stated above (A. 1), blasphemy is opposed to the
confession of faith, so that it contains the gravity of unbelief:
while the sin is aggravated if the will's detestation is added
thereto, and yet more, if it breaks out into words, even as love
and confession add to the praise of faith.

Therefore, since, as stated above (Q. 10, A. 3), unbelief is the
greatest of sins in respect of its genus, it follows that blasphemy
also is a very great sin, through belonging to the same genus as
unbelief and being an aggravated form of that sin.

Reply Obj. 1: If we compare murder and blasphemy as regards the
objects of those sins, it is clear that blasphemy, which is a sin
committed directly against God, is more grave than murder, which is a
sin against one's neighbor. On the other hand, if we compare them in
respect of the harm wrought by them, murder is the graver sin, for
murder does more harm to one's neighbor, than blasphemy does to God.
Since, however, the gravity of a sin depends on the intention of the
evil will, rather than on