Moral Theology. Charles J. Callan
if the motive of the legislator in giving different commands about the same thing is the same in each instance; they differ formally, if the legislator has a different motive in each instance. The motive is recognized either from the express declaration of the lawgiver, or from interpretation given through authority or custom.
(a) When two commands differ only materially, it can be presumed that the legislator is not unwilling that they be fulfilled by one and the same act, unless it is clear that he wishes them to be fulfilled by distinct acts. Example: If one falls sick at Easter time and receives the Viaticum, it is not necessary for him to receive Communion again in order to make his Easter duty; for the divine law of Viaticum and the church law of Easter Communion have the same motive, and hence can be fulfilled by one and the same Communion.
(b) When two commands differ formally, it can be presumed, unless the opposite is manifest, that the legislator wishes them to be complied with by distinct acts. Example: If a confessor imposes a fast as a penance, this penance cannot be performed on a fast day; for the motive of the law of fast is general, that of the sacramental penance is particular.
467. Simultaneous fulfillment by several acts of several obligations is sometimes possible, sometimes impossible. For the acts prescribed by different laws are either capable or incapable of being done at the same time. Thus, it is possible to hear a Mass and to say a penance of some Hail Marys at the same time. But it does not seem easy for an ordinary person to give attention to four or more Masses at the same time.
(a) If the acts do not impede one another and the legislator is not unwilling, several laws can be fulfilled at the same time. Example: If two Masses are being said on adjoining altars, one can hear both—the one to satisfy the Sunday obligation, the other to perform a penance received.
(b) If the acts impede one another, or if the legislator wishes his laws to be fulfilled at distinct times, the different obligations cannot be satisfied simultaneously. Examples: If a distracted person has received a penance to hear six Masses, he cannot hear them all at once, on account of the division of attention necessary. If the confessor told a person to hear Mass "three times," the latter cannot satisfy by hearing three Masses at one time.
468. When a law prescribes not only what is to be done, but when it is to be done, the time must be observed. But the obligation does not always cease with the expiration of the time.
(a) If the time set by the law is a limit beyond which the obligation ceases, he who has not complied within that time has no further obligation. Examples: He who did not fast on Christmas Eve, would not be obliged to fast on Christmas Day. He who did not hear Mass on Sunday, would not be obliged to hear Mass on Monday.
(b) If the time set by the law is not a limit to terminate the obligation, but a date fixed in order to insist on the obligation, he who has not complied within the prescribed period, is nevertheless still obliged. Examples: He who has not made the Easter duty by Trinity Sunday, is obliged to receive Communion after Trinity. He who has not paid a debt on the day required by law, is bound to pay it after that day.
469. It depends on the intention of the lawgiver whether the time he prescribes for fulfillment is a limitation of the obligation or not. The intention of the lawgiver is known either from the words or purpose of the law, or from custom.
470. If the law declares that some duty must be performed within a determined period, allowing freedom for earlier or later performance within the period, the following points must be considered. (a) A person is not obliged to comply early, if he intends to comply before the period has ended. (b) He is obliged to comply early, if he foresees that later he will not be able to do what is required. Examples: If a person who has not made his Easter duty has the opportunity to receive Communion on Easter Sunday, and will not have another such opportunity till Christmas, he is obliged to receive on Easter Sunday. But, if he can communicate any Sunday during the Paschal time, he is not bound to do so on one of the early Sundays. If one can hear an early Mass, but not another Mass, on a holyday, one must hear the early Mass.
471. Just as one may not delay fulfillment until after the time set by law, so neither may one anticipate fulfillment before the time determined, unless the law may be considered to allow this. Examples: If a person has heard Mass on Saturday, he has no right to make this count for the following day. A rosary said before confession cannot be considered as performance of the penance, if in confession one is given the rosary to say.
472. It is held that a cleric who said the Breviary in the morning, just before he was ordained subdeacon and undertook the obligation of the Office, satisfied by that anticipated recitation; likewise, that a traveller who heard Mass in a place where a holyday of obligation of the general law was not in force, has satisfied by anticipation, if later in the morning he reaches as his destination a place where the holyday is observed. For in both these cases the law intends that the Office be said, or the Mass be heard within the day.
473. If a person who is now able to do what the law requires, foresees that he will not be able to do this when the time set by the law arrives, he is not obliged to anticipate fulfillment, even when he has the privilege of anticipation. Examples: A cleric who at 2 p.m. is able to anticipate Matins for tomorrow, and who knows that later, on account of an operation, he will not be able to say his Office, is not bound to anticipate; for no one is obliged to use a privilege. A person who is able to hear Mass on Saturday, and who knows that all of Sunday must be spent on the train, is not obliged to hear Mass on Saturday, though of course this is the better thing to do.
474. The internal acts concerned in the fulfillment of a law are: (a) those in the intellect, such as knowledge; (b) those in the will, such as consent, motive.
475. Knowledge of what one is doing is sometimes necessary, sometimes unnecessary for the fulfillment of a law.
(a) If the law is prohibitive, knowledge is not necessary, since nothing more is required by the law than the omission of what is forbidden. Example: He who ate no meat on a day of abstinence has fulfilled the law, even though he was unconscious all day.
(b) If the law is preceptive of a payment to be made, knowledge is not necessary, since the law requires nothing more than the effect of an external act. Example: He who pays his taxes while intoxicated fulfills his obligation, even though he does not know what he is doing.
(c) If the law is preceptive of an act to be performed, knowledge is required, for it is supposed that the act will be exercised in a human manner. Example: He who sleeps all during Mass on Sunday does not fulfill his duty, for the law intends that one assist at Mass in a human way (i.e., with consciousness of what is being done).
476. Fulfillment of a law is not morally good and meritorious, unless it is voluntary (see 97 sqq.); but the legal obligation is sometimes satisfied even by an unwilling fulfillment.
(a) When the law commands a payment to be made, one may will the contrary of what is commanded and yet fulfill one's obligation. Example: He who pays his taxes unwillingly and under compulsion satisfies the law, which requires not an act, but its effect.
(b) When the law forbids something, it is possible that one does not will the omission commanded and yet fulfills one's obligation. Example: He who intends to eat meat on a day of abstinence which he thinks is a meat day, but, being unable to find what he wants, omits the meat, satisfies the law, which requires only that one omit what is forbidden and have no will to violate the law.
(c) When the law commands that an act be performed, one must perform the act willingly, since the law being for humans intends that fulfillment be made in a human manner. Examples: He who is dragged to church and forcibly detained there during Mass, does not satisfy the law of sanctifying the Sunday, since force makes his assistance at Mass involuntary (see 52). A child that goes to church only to escape punishment satisfies its duty, if, in spite of reluctance, it really intends to hear Mass, for fear does not necessarily make an act involuntary (see 41 sqq.).
477. As to the intention required in fulfilling a law, it is to be noted that one must have, at least implicitly, the intention of doing what the law prescribes, in the case given in the third section (c) of the preceding paragraph. Example: He who goes to church on Sunday while Mass is being said with no other purpose than that of hearing the music or of waiting for