Required, permitted, regulated, or not permitted?
Is That in the Missal?
A documented guide to legitimate options, prescribed texts, and practices governed by the Novus Ordo — Current Roman Missal — and Church instructions.
Required, permitted, regulated, or not permitted?
Is That in the Missal?
Not every unusual practice is an abuse, and not every well-intentioned improvisation is permitted. The Church distinguishes legitimate options from unauthorized alterations. “Illicit” means contrary to liturgical law; it does not automatically mean that the Eucharist is invalid.
Changing prescribed liturgical words on one's own authority
Vatican II states that no one, “even if he be a priest,” may add, remove, or change anything in the liturgy on his own authority. Redemptionis Sacramentum likewise says the practice of altering approved liturgical texts at will must cease.45
Replacing “Behold him who takes away...” with an improvised formula
The approved invitation includes “Behold the Lamb of God, behold him who takes away the sins of the world...” Adding the Holy Name of Jesus is theologically true, but a celebrant still does not have authority to substitute his own wording for the prescribed formula.516
Personally rewriting the Missal for gender-neutral language
An approved translation must be used as approved. An individual celebrant may not replace words because he prefers a different style of inclusive language. This is distinct from language already authorized in an approved liturgical book.5
Substituting a poem or other non-biblical text for a reading
Redemptionis Sacramentum says it is illicit to omit or substitute the prescribed biblical readings on one's own initiative, especially to replace them with non-biblical texts.5
A layperson proclaiming the Gospel at Mass
The Gospel at Mass is reserved to an ordained minister. The homily likewise belongs to the priest celebrant or another priest or deacon according to the norms, not a layperson.5
Composing a personal Eucharistic Prayer or having the congregation recite it
The Eucharistic Prayer is to be proclaimed by the priest. The Church expressly rejects priests composing their own Eucharistic Prayers or assigning parts of the Eucharistic Prayer to laypeople.5
Celebrating the Novus Ordo ad orientem
The Congregation for Divine Worship answered “No” when asked whether GIRM 299 excludes the priest facing the apse. The response explains that celebration facing the people is not an obligation that excludes the other possibility.9
Using Eucharistic Prayer I, the Roman Canon
The current GIRM says Eucharistic Prayer I may always be used and is especially suited for Sundays and certain solemn celebrations.10
Sacred silence
Silence is not an optional “traditionalist extra.” The current GIRM explicitly calls sacred silence part of the celebration and identifies several moments when it should occur.8
Receiving Communion kneeling or on the tongue
U.S. norms ordinarily call for standing, but the individual faithful who chooses to kneel is not to be denied Communion. Reception on the tongue remains a right; reception in the hand is an additional permitted option where authorized.11
The priest walking away from the sanctuary during the homily
GIRM 136 says the priest gives the homily at the chair, at the ambo, or, when appropriate, in another suitable place. It does not contain a blanket sentence saying that every step outside the sanctuary makes a homily illicit. A routinely roaming or performance-style homily should therefore be discussed in terms of the locations and character envisioned by the GIRM, rather than labeled automatically invalid or illicit without more facts.6
Routine use of extraordinary ministers of Holy Communion
Extraordinary ministers have a legitimate role, but the Church calls that role supplementary. The governing question is whether the circumstances create the genuine need described in the norms.12
The priest roaming through the congregation for the Sign of Peace
Redemptionis Sacramentum says the priest may give the Sign of Peace to the ministers but “always remains within the sanctuary” so as not to disturb the celebration; if for a just reason he extends it to a few faithful, the same principle applies.5