I answer that, As stated above (A. 2), it is fitting for a religious order to be established for the works of the active life, in so far as they are directed to the good of our neighbor, the service of God, and the upkeep of divine worship. Now the good of our neighbor is advanced by things pertaining to the spiritual welfare of the soul rather than by things pertaining to the supplying of bodily needs, in proportion to the excellence of spiritual over corporal things. Hence it was stated above (Q. 32, A. 3) that spiritual works of mercy surpass corporal works of mercy. Moreover this is more pertinent to the service of God, to Whom no sacrifice is more acceptable than zeal for souls, as Gregory says (Hom. xii in Ezech.). Furthermore, it is a greater thing to employ spiritual arms in defending the faithful against the errors of heretics and the temptations of the devil, than to protect the faithful by means of bodily weapons. Therefore it is most fitting for a religious order to be established for preaching and similar works pertaining to the salvation of souls.
Reply Obj. 1: He who works by virtue of another, acts as an instrument. And a minister is like an "animated instrument," as the Philosopher says (Polit. i, 2 [*Cf. Ethic. viii, 11]). Hence if a man preach or do something similar by the authority of his superiors, he does not rise above the degree of "discipleship" or "subjection," which is competent to religious.
Reply Obj. 2: Some religious orders are established for soldiering, to wage war, not indeed on their own authority, but on that of the sovereign or of the Church who are competent to wage war by virtue of their office, as stated above (A. 3, ad 4). In the same way certain religious orders are established for preaching and hearing confessions, not indeed by their own authority, but by the authority of the higher and lower superiors, to whom these things belong by virtue of their office. Consequently to assist one's superiors in such a ministry is proper to a religious order of this kind.
Reply Obj. 3: Bishops do not allow these religious severally and indiscriminately to preach or hear confessions, but according to the discretion of the religious superiors, or according to their own appointment.
Reply Obj. 4: The faithful are not bound by law to contribute to the support of other than their ordinary prelates, who receive the tithes and offerings of the faithful for that purpose, as well as other ecclesiastical revenues. But if some men are willing to minister to the faithful by exercising the aforesaid acts gratuitously, and without demanding payment as of right, the faithful are not burdened thereby because their temporal contributions can be liberally repaid by those men, nor are they bound by law to contribute, but by charity, and yet not so that they be burdened thereby and others eased, as stated in 2 Cor. 8:13. If, however, none be found to devote themselves gratuitously to services of this kind, the ordinary prelate is bound, if he cannot suffice by himself, to seek other suitable persons and support them himself.
Reply Obj. 5: The seventy-two disciples are represented not only by the parish priests, but by all those of lower order who in any way assist the bishops in their office. For we do not read that our Lord appointed the seventy-two disciples to certain fixed parishes, but that "He sent them two and two before His face into every city and place whither He Himself was to come." It was fitting, however, that in addition to the ordinary prelates others should be chosen for these duties on account of the multitude of the faithful, and the difficulty of finding a sufficient number of persons to be appointed to each locality, just as it was necessary to establish religious orders for military service, on account of the secular princes being unable to cope with unbelievers in certain countries. _______________________
FIFTH ARTICLE [II-II, Q. 188, Art. 5]
Whether a Religious Order Should Be Established for the Purpose of
Study?
Objection 1: It would seem that a religious order should not be established for the purpose of study. For it is written (Ps. 70:15, 16): "Because I have not known letters [Douay: 'learning'], I will enter into the powers of the Lord," i.e. "Christian virtue," according to a gloss. Now the perfection of Christian virtue, seemingly, pertains especially to religious. Therefore it is not for them to apply themselves to the study of letters.
Obj. 2: Further, that which is a source of dissent is unbecoming to religious, who are gathered together in the unity of peace. Now study leads to dissent: wherefore different schools of thought arose among the philosophers. Hence Jerome (Super Epist. ad Tit. 1:5) says: "Before a diabolical instinct brought study into religion, and people said: I am of Paul, I of Apollo, I of Cephas," etc. Therefore it would seem that no religious order should be established for the purpose of study.