Objection 1: It would seem that it is lawful to communicate with unbelievers. For the Apostle says ( 1 Cor. 10:27 ): "If any of them that believe not, invite you, and you be willing to go, eat of anything that is set before you." And Chrysostom says (Hom. xxv super Epist. ad Heb.): "If you wish to go to dine with pagans, we permit it without any reservation." Now to sit at table with anyone is to communicate with him. Therefore it is lawful to communicate with unbelievers.
Objection 2: Further, the Apostle says ( 1 Cor. 5:12 ): "What have I to do to judge them that are without?" Now unbelievers are without. When, therefore, the Church forbids the faithful to communicate with certain people, it seems that they ought not to be forbidden to communicate with unbelievers.
Objection 3: Further, a master cannot employ his servant, unless he communicate with him, at least by word, since the master moves his servant by command. Now Christians can have unbelievers, either Jews, or pagans, or Saracens, for servants. Therefore they can lawfully communicate with them.
On the contrary, It is written ( Deut. 7:2 , 3 ): "Thou shalt make no league with them, nor show mercy to them; neither shalt thou make marriages with them": and a gloss on Lev. 15:19, "The woman who at the return of the month," etc. says: "It is so necessary to shun idolatry, that we should not come in touch with idolaters or their disciples, nor have any dealings with them."
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 ). For after he had pronounced sentence of excommunication, he adds as his reason: "Know you not that a little leaven corrupts the whole lump?" and afterwards he adds the reason on the part of the punishment inflicted by the sentence of the Church when he says ( 1 Cor. 5:12 ): "Do not you judge them that are within?"
Accordingly, in the first way the Church does not forbid the faithful to communicate with unbelievers, who have not in any way received the Christian faith, viz. with pagans and Jews, because she has not the right to exercise spiritual judgment over them, but only temporal judgment, in the case when, while dwelling among Christians they are guilty of some misdemeanor, and are condemned by the faithful to some temporal punishment. On the other hand, in this way, i.e. as a punishment, the Church forbids the faithful to communicate with those unbelievers who have forsaken the faith they once received, either by corrupting the faith, as heretics, or by entirely renouncing the faith, as apostates, because the Church pronounces sentence of excommunication on both.
With regard to the second way, it seems that one ought to distinguish according to the various conditions of persons, circumstances and time. For some are firm in the faith; and so it is to be hoped that their communicating with unbelievers will lead to the conversion of the latter rather than to the aversion of the faithful from the faith. These are not to be forbidden to communicate with unbelievers who have not received the faith, such as pagans or Jews, especially if there be some urgent necessity for so doing. But in the case of simple people and those who are weak in the faith, whose perversion is to be feared as a probable result, they should be forbidden to communicate with unbelievers, and especially to be on very familiar terms with them, or to communicate with them without necessity.
This suffices for the Reply to the First Objection.
Reply to Objection 2: 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. It is under this head that sometimes the Church, for certain special sins, withdraws the faithful from communication with certain unbelievers.
Reply to Objection 3: There is more probability that a servant who is ruled by his master's commands, will be converted to the faith of his master who is a believer, than if the case were the reverse: and so the faithful are not forbidden to have unbelieving servants. If, however, the master were in danger, through communicating with such a servant, he should send him away, according to Our Lord's command ( Mat. 18:8 ): "If . . . thy foot scandalize thee, cut it off, and cast it from thee."
With regard to the argument in the contrary [*The Leonine Edition gives this solution before the Reply OBJ 2] sense the reply is that the Lord gave this command in reference to those nations into whose territory the Jews were about to enter. For the latter were inclined to idolatry, so that it was to be feared lest, through frequent dealings with those nations, they should be estranged from the faith: hence the text goes on ( Dt. 7:4 ): "For she will turn away thy son from following Me."
Whether unbelievers may have authority or dominion over the faithful?
Objection 1: It would seem that unbelievers may have authority or dominion over the faithful. For the Apostle says ( 1 Tim. 6:1 ): "Whosoever are servants under the yoke, let them count their masters worthy of all honor": and it is clear that he is speaking of unbelievers, since he adds ( 1 Tim. 6:2 ): "But they that have believing masters, let them not despise them." Moreover it is written ( 1 Pet. 2:18 ): "Servants be subject to your masters with all fear, not only to the good and gentle, but also to the froward." Now this command would not be contained in the apostolic teaching unless unbelievers could have authority over the faithful. Therefore it seems that unbelievers can have authority over the faithful.
Objection 2: Further, all the members of a prince's household are his subjects. Now some of the faithful were members of unbelieving princes' households, for we read in the Epistle to the Philippians (4:22): "All the saints salute you, especially they that are of Caesar's household," referring to Nero, who was an unbeliever. Therefore unbelievers can have authority over the faithful.
Objection 3: Further, according to the Philosopher (Polit. i, 2) a slave is his master's instrument in matters concerning everyday life, even as a craftsman's laborer is his instrument in matters concerning the working of his art. Now, in such matters, a believer can be subject to an unbeliever, for he may work on an unbeliever's farm. Therefore unbelievers may have authority over the faithful even as to dominion.
On the contrary, Those who are in authority can pronounce judgment on those over whom they are placed. But unbelievers cannot pronounce judgment on the faithful, for the Apostle says ( 1 Cor. 6:1 ): "Dare any of you, having a matter against another, go to be judged before the unjust," i.e. unbelievers, "and not before the saints?" Therefore it seems that unbelievers cannot have authority over the faithful.
I answer that, That this question may be considered in two ways. First, we may speak of dominion or authority of unbelievers over the faithful as of a thing to be established for the first time. 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.
Secondly, we may speak of dominion or authority, as already in force: and here we must observe that dominion and authority are institutions of human law, while the distinction between faithful and unbelievers arises from the Divine law. Now the Divine law which is the law of grace, does not do away with human law which is the law of natural reason. Wherefore the distinction between faithful and unbelievers, considered in itself, does not do away with dominion and authority of unbelievers over the faithful.
Nevertheless this right of dominion or authority can be justly done away with by the sentence or ordination of the Church who has the authority of God: since unbelievers in virtue of their unbelief deserve to forfeit their power over the faithful who are converted into children of God.
This the Church does sometimes, and sometimes not. For among those unbelievers who are subject, even in temporal matters, to the Church and her members, the Church made the law that if the slave of a Jew became a Christian, he should forthwith receive his freedom, without paying any price, if he should be a "vernaculus," i.e. born in slavery; and likewise if, when yet an unbeliever, he had been bought for his service: if, however, he had been bought for sale, then he should be offered for sale within three months. Nor does the Church harm them in this, because since those Jews themselves are subject to the Church, she can dispose of their possessions, even as secular princes have enacted many laws to be observed by their subjects, in favor of liberty. On the other hand, the Church has not applied the above law to those unbelievers who are not subject to her or her members, in temporal matters, although she has the right to do so: and this, in order to avoid scandal, for as Our Lord showed ( Matt. 17:25 , 26 ) that He could be excused from paying the tribute, because "the children are free," yet He ordered the tribute to be paid in order to avoid giving scandal. Thus Paul too, after saying that servants should honor their masters, adds, "lest the name of the Lord and His doctrine be blasphemed."
This suffices for the Reply to the First Objection.
Reply to Objection 2: The authority of Caesar preceded the distinction of faithful from unbelievers. Hence it was not cancelled by the conversion of some to the faith. Moreover it was a good thing that there should be a few of the faithful in the emperor's household, that they might defend the rest of the faithful. Thus the Blessed Sebastian encouraged those whom he saw faltering under torture, and, the while, remained hidden under the military cloak in the palace of Diocletian.
Reply to Objection 3: 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. Thus Solomon besought the King of Tyre to send master workmen to hew the trees, as related in 3 Kings 5:6. Yet, if there be reason to fear that the faithful will be perverted by such communications and dealings, they should be absolutely forbidden.
Whether the rites of unbelievers ought to be tolerated?
Objection 1: It would seem that rites of unbelievers ought not to be tolerated. For it is evident that unbelievers sin in observing their rites: and not to prevent a sin, when one can, seems to imply consent therein, as a gloss observes on Rom. 1:32 : "Not only they that do them, but they also that consent to them that do them." Therefore it is a sin to tolerate their rites.