Can. 846 ß1 The liturgical books, approved by the competent authority, are to be faithfully followed in the celebration of the sacraments. Accordingly, no one may on a personal initiative add to or omit or alter anything in those book The Church has dealt with such abuses, in Redemptionis Sacramentum, On certain matters to be observed or to be avoided regarding the Most Holy Eucharist (Congregation for Divine Worship and the Discipline of the Sacraments, Rome, on the Solemnity... Read more