Articulus I
Whether Unbelief Is a Sin?
Arg. 1 Objection 1
Ad primum sic proceditur. Videtur quod infidelitas non sit peccatum. Omne enim peccatum est contra naturam, ut patet per Damascenum, in II libro. Sed infidelitas non videtur esse contra naturam, dicit enim Augustinus, in libro de Praed. Sanct., quod posse habere fidem, sicut posse habere caritatem, naturae est hominum, habere autem fidem, quemadmodum habere caritatem, gratiae est fidelium. Ergo non habere fidem, quod est infidelem esse, non est peccatum.
It would seem that unbelief is not a sin. For every sin is contrary to nature, as Damascene proves (De Fide Orth. ii, 4). Now unbelief seems not to be contrary to nature; for Augustine says (De Praedest. Sanct. v) that "to be capable to having faith, just as to be capable of having charity, is natural to all men; whereas to have faith, even as to have charity, belongs to the grace of the faithful." Therefore not to have faith, which is to be an unbeliever, is not a sin.
Arg. 2 Objection 2
Praeterea, nullus peccat in eo quod vitare non potest, quia omne peccatum est voluntarium. Sed non est in potestate hominis quod infidelitatem vitet, quam vitare non potest nisi fidem habendo, dicit enim apostolus, ad Rom. X, quomodo credent ei quem non audierunt? Quomodo autem audient sine praedicante? Ergo infidelitas non videtur esse peccatum.
Further, no one sins that which he cannot avoid, since every sin is voluntary. Now it is not in a man's power to avoid unbelief, for he cannot avoid it unless he have faith, because the Apostle says (Rom. 10:14): "How shall they believe in Him, of Whom they have not heard? And how shall they hear without a preacher?" Therefore unbelief does not seem to be a sin.
Arg. 3 Objection 3
Praeterea, sicut supra dictum est, sunt septem vitia capitalia, ad quae omnia peccata reducuntur. Sub nullo autem horum videtur contineri infidelitas. Ergo infidelitas non est peccatum.
Further, as stated above (I-II, Q. 84, A. 4), there are seven capital sins, to which all sins are reduced. But unbelief does not seem to be comprised under any of them. Therefore unbelief is not a sin.
Sed contra On the contrary
Sed contra, virtuti contrariatur vitium. Sed fides est virtus, cui contrariatur infidelitas. Ergo infidelitas est peccatum.
On the contrary, Vice is opposed to virtue. Now faith is a virtue, and unbelief is opposed to it. Therefore unbelief is a sin.
Respondeo I answer that
Respondeo dicendum quod infidelitas dupliciter accipi potest. Uno modo, secundum puram negationem, ut dicatur infidelis ex hoc solo quod non habet fidem. Alio modo potest intelligi infidelitas secundum contrarietatem ad fidem, quia scilicet aliquis repugnat auditui fidei, vel etiam contemnit ipsam, secundum illud Isaiae LIII, quis credidit auditui nostro? Et in hoc proprie perficitur ratio infidelitatis. Et secundum hoc infidelitas est peccatum. Si autem accipiatur infidelitas secundum negationem puram, sicut in illis qui nihil audierunt de fide, non habet rationem peccati, sed magis poenae, quia talis ignorantia divinorum ex peccato primi parentis est consecuta. Qui autem sic sunt infideles damnantur quidem propter alia peccata, quae sine fide remitti non possunt, non autem damnantur propter infidelitatis peccatum. Unde dominus dicit, Ioan. XV, si non venissem, et locutus eis non fuissem, peccatum non haberent, quod exponens Augustinus dicit quod loquitur de illo peccato quo non crediderunt in Christum.
I answer that, Unbelief may be taken in two ways: first, by way of pure negation, so that a man be called an unbeliever, merely because he has not the faith. Secondly, unbelief may be taken by way of opposition to the faith; in which sense a man refuses to hear the faith, or despises it, according to Isa. 53:1: "Who hath believed our report?" It is this that completes the notion of unbelief, and it is in this sense that unbelief is a sin.
If, however, we take it by way of pure negation, as we find it in those who have heard nothing about the faith, it bears the character, not of sin, but of punishment, because such like ignorance of Divine things is a result of the sin of our first parent. If such like unbelievers are damned, it is on account of other sins, which cannot be taken away without faith, but not on account of their sin of unbelief. Hence Our Lord said (John 15:22) "If I had not come, and spoken to them, they would not have sin"; which Augustine expounds (Tract. lxxxix in Joan.) as "referring to the sin whereby they believed not in Christ."
Ad 1 Reply to Objection 1
Ad primum ergo dicendum quod habere fidem non est in natura humana, sed in natura humana est ut mens hominis non repugnet interiori instinctui et exteriori veritatis praedicationi. Unde infidelitas secundum hoc est contra naturam.
To have the faith is not part of human nature, but it is part of human nature that man's mind should not thwart his inner instinct, and the outward preaching of the truth. Hence, in this way, unbelief is contrary to nature.
Ad 2 Reply to Objection 2
Ad secundum dicendum quod ratio illa procedit de infidelitate secundum quod importat simplicem negationem.
This argument takes unbelief as denoting a pure negation.
Ad 3 Reply to Objection 3
Ad tertium dicendum quod infidelitas secundum quod est peccatum, oritur ex superbia, ex qua contingit quod homo intellectum suum non vult subiicere regulis fidei et sano intellectui patrum. Unde Gregorius dicit, XXXI Moral., quod ex inani gloria oriuntur novitatum praesumptiones. Quamvis posset dici quod, sicut virtutes theologicae non reducuntur ad virtutes cardinales, sed sunt priores eis; ita etiam vitia opposita virtutibus theologicis non reducuntur ad vitia capitalia.
Unbelief, in so far as it is a sin, arises from pride, through which man is unwilling to subject his intellect to the rules of faith, and to the sound interpretation of the Fathers. Hence Gregory says (Moral. xxxi, 45) that "presumptuous innovations arise from vainglory."
It might also be replied that just as the theological virtues are not reduced to the cardinal virtues, but precede them, so too, the vices opposed to the theological virtues are not reduced to the capital vices.