Chapter — Slater, Manual of Moral Theology

Chapter II. The Application of Mass

1.

THE application of a Mass is the intention with which the priest who says it wishes that it should accrue to the benefit of a certain person or persons. Such a special act is only required for the application of the ministerial or special fruit, as it is called; for the priest himself derives fruit from his Mass, as likewise do those who assist at it, and the faithful in general, without any special application.

As it belongs to one who prays to choose the intention for which he offers up his prayer, so the application of his Mass belongs to the priest. A superior may indeed prescribe the intention for which a Mass is to be offered, but he who celebrates the Mass must make the actual application. This should be done before the consecration is finished, for, according to the common opinion, the essence of the Mass consists in the consecration, and an action cannot receive its direction from an intention which is only formed after the action is accomplished. Probably, however, it will be sufficient if the intention is formed between the two consecrations.

p. ii, 110

2.

It is not necessary that the intention by which Mass is applied should be actual or even virtual; it is sufficient if it be habitual, or made once for all and not afterward revoked.

When Mass is said for a stipend it is not necessary for the priest to know precisely what the intention is for which he is desired to say Mass; it is sufficient if he say Mass for the intention of the giver of the stipend. Clement VIII forbade priests to offer Mass for the first who should give a stipend for that purpose, and if no one actually intended to ask for a Mass when a priest celebrated with such an intention the Mass would not be applied.

A priest does not sin if he celebrates without any special intention, but it is always better to have one, as then the Mass will be more fruitful. When a priest celebrates for a stipend he may not divide the fruits of the Mass, applying the satisfactory or other fruit to the intention of the giver, and another The Application fruit to some other intention.

The whole fruit of the sacrifice must go to the giver of the stipend. When, however, a Mass is ordered by a superior in thanksgiving for some blessing, it will not be wrong to apply the other fruits for other intentions which in no way interfere with that prescribed by authority.

p. ii, 110–111