will adheres to
God's will, it becomes in consequence, a rule regulated according to
its proper measure. Wherefore it is a sin to disaccord with such a
will, because by that very fact one disaccords with the Divine rule.

Reply Obj. 2: Just as a man's will that adheres to God is a right
rule, to disaccord with which is a sin, so too a man's will that is
opposed to God is a perverse rule, to disaccord with which is good.
Hence to cause a discord, whereby a good concord resulting from
charity is destroyed, is a grave sin: wherefore it is written (Prov.
6:16): "Six things there are, which the Lord hateth, and the seventh
His soul detesteth," which seventh is stated (Prov. 6:19) to be "him
that soweth discord among brethren." On the other hand, to arouse a
discord whereby an evil concord (i.e. concord in an evil will) is
destroyed, is praiseworthy. In this way Paul was to be commended for
sowing discord among those who concorded together in evil, because
Our Lord also said of Himself (Matt. 10:34): "I came not to send
peace, but the sword."

Reply Obj. 3: The discord between Paul and Barnabas was accidental
and not direct: because each intended some good, yet the one thought
one thing good, while the other thought something else, which was
owing to human deficiency: for that controversy was not about things
necessary to salvation. Moreover all this was ordained by Divine
providence, on account of the good which would ensue.
_______________________

SECOND ARTICLE [II-II, Q. 37, Art. 2]

Whether Discord Is a Daughter of Vainglory?

Objection 1: It would seem that discord is not a daughter of
vainglory. For anger is a vice distinct from vainglory. Now discord
is apparently the daughter of anger, according to Prov. 15:18: "A
passionate man stirreth up strifes." Therefore it is not a daughter
of vainglory.

Obj. 2: Further, Augustine expounding the words of John 7:39, "As yet
the Spirit was not given," says (Tract. xxxii) "Malice severs,
charity unites." Now discord is merely a separation of wills.
Therefore discord arises from malice, i.e. envy, rather than from
vainglory.

Obj. 3: Further, whatever gives rise to many evils, would seem to be
a capital vice. Now such is discord, because Jerome in commenting on
Matt. 12:25, "Every kingdom divided against itself shall be made
desolate," says: "Just as concord makes small things thrive, so
discord brings the greatest things to ruin." Therefore discord should
itself be