The Other Parts of the Mass (Part II)
[64.] The homily, which is given in the course of the celebration of Holy Mass and is a part of the Liturgy itself, “should ordinarily be given by the Priest celebrant himself. He may entrust it to a concelebrating Priest or occasionally, according to circumstances, to a Deacon, but never to a layperson. In particular cases and for a just cause, the homily may even be given by a Bishop or a Priest who is present at the celebration but cannot concelebrate”.
[65.] It should be borne in mind that any previous norm that may have admitted non-ordained faithful to give the homily during the eucharistic celebration is to be considered abrogated by the norm of canon 767 §1. This practice is reprobated, so that it cannot be permitted to attain the force of custom.
[66.] The prohibition of the admission of laypersons to preach within the Mass applies also to seminarians, students of theological disciplines, and those who have assumed the function of those known as “pastoral assistants”; nor is there to be any exception for any other kind of layperson, or group, or community, or association.
[67.] Particular care is to be taken so that the homily is firmly based upon the mysteries of salvation, expounding the mysteries of the Faith and the norms of Christian life from the biblical readings and liturgical texts throughout the course of the liturgical year and providing commentary on the texts of the Ordinary or the Proper of the Mass, or of some other rite of the Church. It is clear that all interpretations of Sacred Scripture are to be referred back to Christ himself as the one upon whom the entire economy of salvation hinges, though this should be done in light of the specific context of the liturgical celebration. In the homily to be given, care is to be taken so that the light of Christ may shine upon life’s events. Even so, this is to be done so as not to obscure the true and unadulterated word of God: for instance, treating only of politics or profane subjects, or drawing upon notions derived from contemporary pseudo-religious currents as a source.
[68.] The diocesan Bishop must diligently oversee the preaching of the homily, also publishing norms and distributing guidelines and auxiliary tools to the sacred ministers, and promoting meetings and other projects for this purpose so that they may have the opportunity to consider the nature of the homily more precisely and find help in its preparation.
[69.] In Holy Mass as well as in other celebrations of the Sacred Liturgy, no Creed or Profession of Faith is to be introduced which is not found in the duly approved liturgical books.