Dispositions for Celebration of Mass

Dispositions for the Celebration of Mass.—(a) Dispositions of Soul.—The celebrant must be in the state of grace, and must go to confession before Mass if he has a serious sin on his conscience (see 2701 c). He must have the intention and attention which the validity of the consecration requires (2701 b), and the reverence and devotion which is due the prayers of the Mass (2153 sqq.), Voluntary and fully deliberate distractions entertained for a considerable time during the Canon seem to be seriously sinful. It is most suitable, though apparently not commanded by the Church, that Matins and Lauds be said before Mass. There is, however, a duty of religion and of charity to self to make a suitable preparation and thanksgiving; but negligence here is a light sin, unless there be contempt or serious scandal. Fifteen minutes or a half-hour is recommended by ascetical writers, and the prayers may be taken from those given in the Breviary and Missal, Internal prayer, however, is more important than external recitation (Canon 810).

(b) Dispositions of Body.—The Eucharistic or natural fast is of grave obligation for the celebration of Mass (Canon 808). The only excuses are necessity according to divine law or exemption by ecclesiastical law. Necessity occurs when one must complete the sacrifice (e.g., when after the Communion the priest notices that he consecrated one species invalidly), or must avoid scandal (e.g., when a priest remembers after going to the altar that he is not fasting), or must consecrate for the Viaticum (e.g., when there is no consecrated host for a dying person). Since the law is ecclesiastical, the Church could dispense for a grave reason (e.g., to enable a sickly priest to say Masses on Sunday at widely separated points of his missions). It is clear that the celebration of Mass calls for cleanness of body, suitableness of dress, neatness and rubrical correctness of vestments (Canon 811). The omission of a principal vestment (i.e., blessed alb, stole or chasuble) is a serious sin, except in grave necessity; the omission of minor vestments (e.g., amice) is a venial sin, unless there is a just reason. The color of the day is not gravely obligatory, except by reason of scandal, and a good reason makes it lawful to use another color.