The pastoral effectiveness of a celebration will be greatly increased if the texts of the readings, the prayers, and the liturgical songs correspond as closely as possible to the needs, spiritual preparation, and culture of those taking part. This is achieved by appropriate use of the wide options described below. The priest, therefore, in planning the celebration of Mass, should have in mind the common spiritual good of the people of God, rather than his own inclinations. He should, moreover, remember that the selection of different parts is to be made in agreement with those who have some role in the celebration, including the faithful, in regard to the parts that more directly pertain to each. Since, indeed, a variety of options is provided for the different parts of the Mass, it is necessary for the deacon, the lectors, the psalmist, the cantor, the commentator, and the choir to be completely sure before the celebration about those texts for which each is responsible is to be used and that nothing be improvised. Harmonious planning and carrying out of the rites will be of great assistance in disposing the faithful to participate in the Eucharist.
TheoFonsAd fontes fidei