Thomas Aquinas

“ Consequently it is evident that unbelievers cannot do those good works which proceed from grace, viz. meritorious works; yet they can, to a certain extent, do those good works for which the good of nature suffices.
Hence it does not follow that they sin in everything they do; but whenever they do anything out of their unbelief, then they sin. For even as one who has the faith, can commit an actual sin, venial or even mortal, which he does not refer to the end of faith, so too, an unbeliever can do a good deed in a matter which he does not refer to the end of his unbelief. ”

“ I answer that, Human government is derived from the Divine government, and should imitate it. Now although God is all-powerful and supremely good, nevertheless He allows certain evils to take place in the universe, which He might prevent, lest, without them, greater goods might be forfeited, or greater evils ensue. Accordingly in human government also, those who are in authority, rightly tolerate certain evils, lest certain goods be lost, or certain greater evils be incurred: thus Augustine says (De Ordine ii, 4) : "If you do away with harlots, the world will be convulsed with lust." ”

“ No one should be snatched from natural death against the order of civil law: for instance, if a man were condemned by the judge to temporal death, nobody ought to rescue him by violence: hence no one ought to break the order of the natural law, whereby a child is in the custody of its father, in order to rescue it from the danger of everlasting death. ”

“ The will's contempt causes the intellect's dissent, which completes the notion of unbelief. Hence the cause of unbelief is in the will, while unbelief itself is in the intellect.
Reply to Objection 3: He that believes a wicked angel to be a good one, does not dissent from a matter of faith, because "his bodily senses are deceived, while his mind does not depart from a true and right judgment" as the gloss observes [*Augustine, Enchiridion lx] . But, according to the same authority, to adhere to Satan when he begins to invite one to his abode, i.e. wickedness and error, is not without sin. ”

“ Hence, even as charity is one, because it adheres to the Sovereign Good, while there are various species of vice opposed to charity, which turn away from the Sovereign Good by turning to various temporal goods, and also in respect of various inordinate relations to God, so too, faith is one virtue through adhering to the one First Truth, yet there are many species of unbelief, because unbelievers follow many false opinions. ”

“ Now the heathens deny the faith in more numerous and more important points than Jews and heretics; since they do not accept the faith at all. Therefore their unbelief is the gravest.
Objection 3: Further, every good diminishes evil. Now there is some good in the Jews, since they believe in the Old Testament as being from God, and there is some good in heretics, since they venerate the New Testament. Therefore they sin less grievously than heathens, who receive neither Testament. ”

“ An unbeliever is more severely punished for his sin of unbelief than another sinner is for any sin whatever, if we consider the kind of sin. But in the case of another sin, e.g. adultery, committed by a believer, and by an unbeliever, the believer, other things being equal, sins more gravely than the unbeliever, both on account of his knowledge of the truth through faith, and on account of the sacraments of faith with which he has been satiated, and which he insults by committing sin. ”

“ As to those who are well instructed and firm in the faith, there can be no danger in disputing about the faith in their presence. But as to simple-minded people, we must make a distinction; because either they are provoked and molested by unbelievers, for instance, Jews or heretics, or pagans who strive to corrupt the faith in them, or else they are not subject to provocation in this matter, as in those countries where there are not unbelievers. ”

“ Further, one is more bound to succor a man who is in danger of everlasting death, than one who is in danger of temporal death. Now it would be a sin, if one saw a man in danger of temporal death and failed to go to his aid. Since, then, the children of Jews and other unbelievers are in danger of everlasting death, should they be left to their parents who would imbue them with their unbelief, it seems that they ought to be taken away from them and baptized, and instructed in the faith. ”

“ For it is not right to slay heretics, because if you do you will necessarily slay many innocent persons." Therefore it seems that for the same reason unbelievers ought not to be compelled to the faith. ”

“ Hence, though unbelievers sin in their rites, they may be tolerated, either on account of some good that ensues therefrom, or because of some evil avoided. Thus from the fact that the Jews observe their rites, which, of old, foreshadowed the truth of the faith which we hold, there follows this good---that our very enemies bear witness to our faith, and that our faith is represented in a figure, so to speak. ”

“ The Church does not exercise judgment against unbelievers in the point of inflicting spiritual punishment on them: but she does exercise judgment over some of them in the matter of temporal punishment. ”

“ 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. ”

“ The words quoted must be taken to mean either that the life of unbelievers cannot be sinless, since without faith no sin is taken away, or that whatever they do out of unbelief, is a sin. Hence the same authority adds: "Because every one that lives or acts according to his unbelief, sins grievously." ”

“ For a child is by nature part of its father: thus, at first, it is not distinct from its parents as to its body, so long as it is enfolded within its mother's womb; and later on after birth, and before it has the use of its free-will, it is enfolded in the care of its parents, which is like a spiritual womb, for so long as man has not the use of reason, he differs not from an irrational animal ”

“ On the contrary, Vice is opposed to virtue. Now faith is a virtue, and unbelief is opposed to it. Therefore unbelief is a sin.
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 Is. ”

“ It is for this reason that Christ's faithful often wage war with unbelievers, not indeed for the purpose of forcing them to believe, because even if they were to conquer them, and take them prisoners, they should still leave them free to believe, if they will, but in order to prevent them from hindering the faith of Christ. ”

“ Jews are bondsmen of princes by civil bondage, which does not exclude the order of natural or Divine law.
Reply to Objection 4: Man is directed to God by his reason, whereby he can know Him. Hence a child before coming to the use of reason, in the natural order of things, is directed to God by its parents' reason, under whose care it lies by nature: and it is for them to dispose of the child in all matters relating to God. ”

“ Further, the children of a bondsman are themselves bondsmen, and under the power of his master. Now the Jews are bondsmen of kings and princes: therefore their children are also. Consequently kings and princes have the power to do what they will with Jewish children. Therefore no injustice is committed if they baptize them against their parents' wishes.
Objection 4: Further, every man belongs more to God, from Whom he has his soul, than to his carnal father, from whom he has his body. ”

“ Just as taking a vow is a matter of will, and keeping a vow, a matter of obligation, so acceptance of the faith is a matter of the will, whereas keeping the faith, when once one has received it, is a matter of obligation. Wherefore heretics should be compelled to keep the faith. ”

“ Those Jews who have in no way received the faith, ought not by no means to be compelled to the faith: if, however, they have received it, they ought to be compelled to keep it, as is stated in the same chapter. ”

“ I answer that, Communication with a particular person is forbidden to the faithful, in two ways: first, as a punishment of the person with whom they are forbidden to communicate; secondly, for the safety of those who are forbidden to communicate with others. Both motives can be gathered from the Apostle's words (1 Cor. 5:6) . ”

“ In the first case it is necessary to dispute in public about the faith, provided there be those who are equal and adapted to the task of confuting errors; since in this way simple people are strengthened in the faith, and unbelievers are deprived of the opportunity to deceive, while if those who ought to withstand the perverters of the truth of faith were silent, this would tend to strengthen error. ”

“ Slaves are subject to their masters for their whole lifetime, and are subject to their overseers in everything: whereas the craftsman's laborer is subject to him for certain special works. Hence it would be more dangerous for unbelievers to have dominion or authority over the faithful, than that they should be allowed to employ them in some craft. Wherefore the Church permits Christians to work on the land of Jews, because this does not entail their living together with them. ”

“ This ought by no means to be allowed, since it would provoke scandal and endanger the faith, for subjects are easily influenced by their superiors to comply with their commands, unless the subjects are of great virtue: moreover unbelievers hold the faith in contempt, if they see the faithful fall away. Hence the Apostle forbade the faithful to go to law before an unbelieving judge. And so the Church altogether forbids unbelievers to acquire dominion over believers, or to have authority over them in any capacity whatever. ”

“ On the other hand, the rites of other unbelievers, which are neither truthful nor profitable are by no means to be tolerated, except perchance in order to avoid an evil, e.g. the scandal or disturbance that might ensue, or some hindrance to the salvation of those who if they were unmolested might gradually be converted to the faith. ”

“ On the other hand, there are unbelievers who at some time have accepted the faith, and professed it, such as heretics and all apostates: such should be submitted even to bodily compulsion, that they may fulfil what they have promised, and hold what they, at one time, received. ”