(b) There have been cases in which subdeacons and deacons were permitted to marry for the sake of some common good of the Church or of a nation, and in which the marriages of priests were validated, as at the time of the Anglican Schism and of the French Revolution. But the clerics thus dispensed were forbidden the exercise of their clerical powers.
2236. Dispensation from a Vow Made for the Benefit of a Third Party.—(a) If the promise is gratuitous and not yet accepted by the third party, the dispensation can be given; for in such a case the only obligation is one arising from the vow, and the Church can dispense from vows. Hence, if one vowed to have Masses said for the soul of a deceased person or to give alms to the poor without determining any particular persons, the vows can be dispensed.
(b) If the promise is gratuitous and accepted by the third party, but is made chiefly in honor of God and only secondarily for the benefit of the third party, it is probable that the dispensation can be given. For that which is secondary in the promise should follow that which is primary, and here the vow, which is the primary intention, is dispensable.
(c) If the promise is gratuitous and accepted, but the purpose to benefit the third party is not subordinate to the purpose to make a vow, or if the promise is onerous, the dispensation cannot regularly be given. The reason is that in these cases there is question not only of a vow but also of a contract, not only of an obligation to God but also of an obligation to man, and justice demands that the rights of a party to a contract be not taken away without his consent. Thus, a vow of stability made on entrance into a Congregation cannot be dispensed without the consent of the Congregation itself, for the vow was also a contract between the Congregation and the vower. There are exceptions, however, as when the third party renounces his right, or when the Pope, in virtue of his supreme authority over ecclesiastical goods or of his dominative authority, grants a dispensation for which there are just and sufficient reasons.
2237. Persons Who May Be Dispensed from Vows.—(a) Dispensation may be granted to subjects and, in certain cases, even to non-subjects. Thus, a superior whose faculty is not restricted may dispense himself (see 403); but it is advisable that dispensation be always sought from another person on account of the danger of self-deception. A local Ordinary also has the power to dispense, not only his own subjects, but also outsiders who are in his territory (see Canon 1313).
(b) Dispensation may be given either in the confessional or outside of the confessional, unless the contrary is stipulated in the faculty. It is more suitable, however, that it be given in the confessional.
(e) Dispensation may not be granted except to those who are willing to accept it, and in this respect it differs from an annulment, which may be made even against the will of the vower. The reason for this is that the vower placed the obligation on himself freely (see 403). This holds at least as regards the dispensation of a private vow.
2238. Commutation of Vows.—The commutation of a vow is the substitution of some good work for the one promised by vow with the transfer of the religious obligation to the new work. Commutation differs from annulment and dispensation, for these take away the obligation while commutation only changes the matter, the obligation of the vow remaining unchanged. Thus, if the vow to make a pilgrimage is commuted into prayers, one is no longer obliged to make the pilgrimage, but one is bound under vow to say the substituted prayers. The power of the Church to commute vows is clear from what was said above about the power of dispensation, for he who can do what is greater can also do what is less.
2239. Kinds of Good Works that May Be Substituted for Vows.—(a) The good work can be a better work than the old one, that is, a work which, if not more difficult, is more pleasing to God and more spiritually advantageous to the vower. Hence, if one has vowed to give an alms to a poor stranger, the vow may be commuted, if the stranger has not accepted the promise, in favor of another stranger who is poorer or in favor of one’s father who is also poor.
(b) The good work may be a work equally good, that is, one which morally speaking has the same difficulty or spiritual value. Thus, one prayer may be exchanged for another of equal length, one alms for another of equal amount, one pilgrimage for another of equal distance. But equality is to be determined, not mathematically but morally, and hence one kind of work may be exchanged for another, one kind of vow for another, and it is not necessary that the works be of exactly the same worth. In fact, the new work, which objectively is only equal, is subjectively better, since it is more advantageous to the vower.