Tridentine Mass

The Tridentine Mass, also known as the Extraordinary Form of the Roman Rite or usus antiquior (more ancient usage), or the Traditional Latin Mass or the Traditional Rite is the liturgy in the Roman Missal of the Catholic Church codified in 1570 and published thereafter with amendments up to 1962. Celebrated almost exclusively in Ecclesiastical Latin, it was the most widely used Eucharistic liturgy in the world from its issuance in 1570 until its replacement by the Mass of Paul VI promulgated in 1969 (with the revised Roman Missal appearing in 1970.)
"Tridentine" is derived from the Latin Tridentinus, "related to the city of Trent" where the Council of Trent was held at the height of the Counter-Reformation. In response to a decision of that council, Pope Pius V promulgated the 1570 Roman Missal, making it mandatory throughout the Latin Church, except in places and religious orders with rites or uses from before 1370.
Permissions for celebrating the Tridentine Mass have been adjusted by each modern pope, and most recently restricted by Pope Francis' motu proprio Traditionis Custodes in 2021. This has been controversial among so-called Traditionalist Catholics: some material on the subject may be to some extent partisan.
The term "Tridentine Mass" applies to celebrations in accordance with the successive editions of the Roman Missal whose title attribute them to the Council of Trent (Missale Romanum ex decreto Sacrosancti Concilii Tridentini restitutum) and to the pope or popes who made the revision represented in the edition in question. The first of these editions is that of 1570, in which the mention of the Council of Trent is followed by a reference to Pope Pius V (Pii V Pont. Max. iussu editum). The last, that of 1962, mentions the popes only generically (Missale Romanum ex decreto SS. Concilii Tridentini restitutum Summorum Pontificum cura recognitum). Editions later than that of 1962 mention the Second Vatican Council instead of the Council of Trent, as in the 2002 edition: Missale Romanum ex decreto Sacrosancti Oecumenici Concilii Vaticani II instauratum auctoritati Pauli Pp. VI promulgatum Ioannis Pauli Pp. II cura recognitum.
Sometimes the term "Tridentine Mass" is applied restrictively to Masses in which the final 1962 edition of the Tridentine Roman Missal is used, the only edition still authorized, under certain conditions, as an extraordinary form of the Roman Rite Mass.
Some speak of this form of Mass as "the Latin Mass". This too is a restrictive use of a term whose proper sense is much wider. The Second Vatican Council Mass also has its normative text, from which vernacular translations are made, in Latin, and, except at Masses scheduled by the ecclesiastical authorities to take place in the language of the people, it can everywhere be celebrated in Latin.
A few speak of the Tridentine Mass in general or of its 1962 form as the "Gregorian Rite". The term "Tridentine Rite" is also sometimes met with, but Pope Benedict XVI declared it inappropriate to speak of the 1962 version and that published by later Popes as if they were two "rites". Rather, he said, it is a matter of a twofold "use" of one and the same Roman "rite". Hugh Somerville-Knapman, O.S.B., says that they should be separate rites, as the Mass promulgated at the Council of Trent was already the pre-existing liturgy of the Diocese of Rome and has direct continuity with the Mass practiced by the apostles, whereas the changes made in implementing the Mass of Paul VI are so great that it no longer resembles any Catholic liturgy practiced prior to the 20th century.
Other names for the edition promulgated by Pope John XXIII in 1962 (the last to bear the indication ex decreto Sacrosancti Concilii Tridentini restitutum) are the Extraordinary Form, or the usus antiquior ("more ancient usage" in Latin ).
Traditionalist Catholics, whose best-known characteristic is an attachment to the Tridentine Mass, frequently refer to it as the "Traditional Mass" or the "Traditional Latin Mass". They describe as a "codifying" of the form of the Mass the preparation of Pius V's edition of the Roman Missal, of which he said that the experts to whom he had entrusted the work collated the existing text with ancient manuscripts and writings, restored it to "the original form and rite of the holy Fathers" and further emended it. To distinguish this form of Mass from the Vatican II Mass, traditionalist Catholics sometimes call it the "Mass of the Ages", and say that it comes down to us "from the Church of the Apostles, and ultimately, indeed, from Him Who is its principal Priest and its spotless Victim".
In most countries, the language used for celebrating the Tridentine Mass was and is Latin, which became the language of the Roman liturgy in the late 4th century. However, there have been numerous exceptions, primarily in missionary areas or for ancient churches with an established sacred-language tradition:
After the publication of the 1962 edition of the Roman Missal, the 1964 Instruction on implementing the Constitution on Sacred Liturgy of the Second Vatican Council laid down that "normally the epistle and gospel from the Mass of the day shall be read in the vernacular". Episcopal conferences were to decide, with the consent of the Holy See, what other parts, if any, of the Mass were to be celebrated in the vernacular.
Outside the Roman Catholic Church:
At the time of the Council of Trent, the traditions preserved in printed and manuscript missals varied considerably, and standardization was sought both within individual dioceses and throughout the Latin West. Standardization was required also in order to prevent the introduction into the liturgy of Protestant ideas in the wake of the Protestant Reformation.
Pope Pius V accordingly imposed uniformity by law in 1570 with the papal bull "Quo primum", ordering use of the Roman Missal as revised by him. He allowed only those rites that were at least 200 years old to survive the promulgation of his 1570 Missal. Several of the rites that remained in existence were progressively abandoned, though the Ambrosian rite survives in Milan, Italy and neighbouring areas, stretching even into Switzerland, and the Mozarabic rite remains in use to a limited extent in Toledo and Madrid, Spain. The Carmelite, Carthusian and Dominican religious orders kept their rites, but in the second half of the 20th century two of these three chose to adopt the Roman Rite. The rite of Braga, in northern Portugal, seems to have been practically abandoned: since 18 November 1971 that archdiocese authorizes its use only on an optional basis.
Beginning in the late 17th century, France and neighbouring areas, such as Münster, Cologne and Trier in Germany, saw a flurry of independent missals published by bishops influenced by Jansenism and Gallicanism. This ended when Abbot Guéranger and others initiated in the 19th century a campaign to return to the Roman Missal.
Pius V's revision of the liturgy had as one of its declared aims the restoration of the Roman Missal "to the original form and rite of the holy Fathers". Due to the relatively limited resources available to his scholars, this aim was in fact not realised.
Three different printings of Pius V's Roman Missal, with minor variations, appeared in 1570, a folio and a quarto edition in Rome and a folio edition in Venice. A reproduction of what is considered to be the earliest, referred to therefore as the editio princeps, was produced in 1998. In the course of the printing of the editio princeps, some corrections were made by pasting revised texts over parts of the already printed pages. There were several printings again in the following year 1571, with various corrections of the text.
In the Apostolic Constitution (papal bull) Quo primum, with which he prescribed use of his 1570 edition of the Roman Missal, Pius V decreed: "We order and enjoin that nothing must be added to Our recently published Missal, nothing omitted from it, nor anything whatsoever be changed within it." This of course did not exclude changes by a Pope, and Pope Pius V himself added to the Missal the feast of Our Lady of Victory, to celebrate the victory of Lepanto of 7 October 1571. His immediate successor, Pope Gregory XIII, changed the name of this feast to "The Most Holy Rosary of the Blessed Virgin Mary" and Pope John XXIII changed it to "Our Lady of the Rosary".
Pius V's work in severely reducing the number of feasts in the Roman calendar (see this comparison) was very soon further undone by his successors. Feasts that he had abolished, such as those of the Presentation of Mary, Saint Anne and Saint Anthony of Padua, were restored even before Clement VIII's 1604 typical edition of the Missal was issued.
In the course of the following centuries new feasts were repeatedly added and the ranks of certain feasts were raised or lowered. A comparison between Pope Pius V's Tridentine calendar and the General Roman Calendar of 1954 shows the changes made from 1570 to 1954. Pope Pius XII made a general revision in 1955, and Pope John XXIII made further general revisions in 1960 simplifying the terminology concerning the ranking of liturgical celebrations.
While keeping on 8 December what he called the feast of "the Conception of Blessed Mary" (omitting the word "Immaculate"), Pius V suppressed the existing special Mass for the feast, directing that the Mass for the Nativity of Mary (with the word "Nativity" replaced by "Conception") be used instead. Part of that earlier Mass was revived in the Mass that Pope Pius IX ordered to be used on the feast.
In addition to such occasional changes, the Roman Missal was subjected to general revisions whenever a new "typical edition" (an official edition whose text was to be reproduced in printings by all publishers) was issued.
After Pius V's original Tridentine Roman Missal, the first new typical edition was promulgated in 1604 by Pope Clement VIII, who in 1592 had issued a revised edition of the Vulgate. The Bible texts in the Missal of Pope Pius V did not correspond exactly to the new Vulgate, and so Clement edited and revised Pope Pius V's Missal, making alterations both in the scriptural texts and in other matters. He abolished some prayers that the 1570 Missal obliged the priest to say on entering the church; shortened the two prayers to be said after the Confiteor; directed that the words "Haec quotiescumque feceritis, in meam memoriam facietis" ("Do this in memory of me") should not be said while displaying the chalice to the people after the consecration, but before doing so; inserted directions at several points of the Canon that the priest was to pronounce the words inaudibly; suppressed the rule that, at High Mass, the priest, even if not a bishop, was to give the final blessing with three signs of the cross; and rewrote the rubrics, introducing, for instance, the ringing of a small bell.
The next typical edition was issued in 1634, when Pope Urban VIII made another general revision of the Roman Missal.
There was no further typical edition until that of Pope Leo XIII in 1884. It introduced only minor changes, not profound enough to merit having the papal bull of its promulgation included in the Missal, as the bulls of 1604 and 1634 were.
In 1911, with the bull Divino Afflatu, Pope Pius X made significant changes in the rubrics.
Pope Pius XII radically revised the Palm Sunday and Easter Triduum liturgy, suppressed many vigils and octaves and made other alterations in the calendar (see General Roman Calendar of Pope Pius XII). John XXIII's 1960 Code of Rubrics were incorporated in the final 1962 typical edition of the Tridentine Missal, replacing both Pius X's "Additions and Changes in the Rubrics of the Missal" and the earlier "General Rubrics of the Missal".
The General Roman Calendar was revised partially in 1955 and 1960 and completely in 1969 in Pope Paul VI's motu proprio Mysterii Paschalis, again reducing the number of feasts.
The Roman Missal issued by Pope John XXIII in 1962 differed from earlier editions in a number of ways.
In 2007, Pope Benedict XVI authorized, under certain conditions, continued use of this 1962 edition of the Roman Missal as an "extraordinary form", alongside the later form, introduced in 1970, which he called the normal or ordinary form.
Pre-1962 forms of the Roman Rite, which some individuals and groups employ, are generally not authorized for liturgical use, but in early 2018 the Ecclesia Dei Commission granted communities served by the Priestly Fraternity of Saint Peter an indult to use, at the discretion of the Fraternity's superior, the pre-1955 Holy Week liturgy for three years (2018, 2019, 2020).
The Mass is divided into two parts, the Mass of the Catechumens and the Mass of the Faithful. Catechumens, those being instructed in the faith, were once dismissed after the first half, not having yet professed the faith. Profession of faith was considered essential for participation in the Eucharistic sacrifice.
This rule of the Didache is still in effect. It is only one of the three conditions (baptism, right faith and right living) for admission to receiving Holy Communion that the Catholic Church has always applied and that were already mentioned in the early 2nd century by Saint Justin Martyr: "And this food is called among us the Eucharist, of which no one is allowed to partake but the man who believes that the things which we teach are true, and who has been washed with the washing that is for the remission of sins, and unto regeneration, and who is so living as Christ has enjoined" (First Apology, Chapter LXVI).
Asperges (Sprinkling with holy water, Psalm 51:9, 3) is an optional penitential rite that ordinarily precedes only the principal Mass on Sunday. In the sacristy, a priest wearing an alb, if he is to celebrate the Mass, or surplice, if he is not the celebrant of the Mass, and vested with a stole, which is the color of the day if the priest is the celebrant of the Mass or purple if he is not the celebrant of the Mass, exorcises and blesses salt and water, then puts the blessed salt into the water by thrice sprinkling it in the form of a cross while saying once, "Commixtio salis et aquæ pariter fiat in nomine Patris, et Filii et Spiritus Sancti" (May a mixture of salt and water now be made in the name of the Father, and of the Son, and of the Holy Spirit). After that, the priest, vested in a cope of the color of the day, while the choir sings an antiphon and a verse of Psalm 50/51 or 117/118, sprinkles with the holy water the altar three times, and then the clergy and the congregation. This rite, if used, precedes the Prayers at the Foot of the Altar. During the Easter season, the "Asperges me..." verse is replaced by the "Vidi aquam..." verse, and "Alleluia" is added to the "Ostende nobis..." verse and to its response.
Following the Asperges, Mass begins.
The first part is the Mass of the Catechumens.
The sequence of Prayers at the foot of the altar is:
The priest then says, Oremus (Let us pray). After this he ascends to the altar, praying silently "Aufer a nobis, quæsumus, Dómine, iniquitates nostras: ut ad Sancta sanctorum puris mereámur méntibus introíre. Per Christum Dóminum nostrum. Amen." (Translation: Take away from us our iniquities, we beseech thee O Lord, that with pure minds we may worthily enter into the holy of holies"), a reference to Exodus 26:33–34, 1 Kings 6:16, 1 Kings 8:6, 2 Chronicles 3:8, Ezekiel 41:4, and others. He places his joined hands on the edge of the altar, so that only the tips of the small fingers touch the front of it, and silently prays that, by the merits of the Saints whose relics are in the altar, and of all the Saints, God may pardon all his sins. At the words quorum relíquiæ hic sunt (whose relics are here), he spreads his hands and kisses the altar.
The second part is the Mass of the Faithful.
Until 1960, the Tridentine form of the Roman Missal laid down that a candle should be placed at the Epistle side of the altar and that it should be lit at the showing of the consecrated sacrament to the people. In practice, except in monasteries and on special occasions, this had fallen out of use long before Pope John XXIII replaced the section on the general rubrics of the Roman Missal with his Code of Rubrics, which no longer mentioned this custom. On this, see Elevation candle.
The Tridentine Missal includes prayers for the priest to say before and after Mass.
In later editions of the Roman Missal, including that of 1962, the introductory heading of these prayers indicates that they are to be recited pro opportunitate (as circumstances allow), which in practice means that they are merely optional and may be omitted. The original Tridentine Missal presents most of the prayers as obligatory, indicating as optional only a very long prayer attributed to Saint Ambrose (which later editions divide into seven sections, each to be recited on only one day of the week) and two other prayers attributed to Saint Ambrose and Saint Thomas Aquinas respectively.
In addition to these three prayers, the original Tridentine Missal proposes for the priest to recite before he celebrates Mass the whole of Psalms 83–85, 115, 129 (the numbering is that of the Septuagint and Vulgate), and a series of collect-style prayers. Later editions add, after the three that in the original Missal are only optional, prayers to the Blessed Virgin, Saint Joseph, all the angels and saints, and the saint whose Mass is to be celebrated, but, as has been said, treats as optional all the prayers before Mass, even those originally given as obligatory.
The original Tridentine Missal proposes for recitation by the priest after Mass three prayers, including the Adoro te devote. Later editions place before these three the Canticle of the Three Youths (Dan) with three collects, and follow them with the Anima Christi and seven more prayers, treating as optional even the three prescribed in the original Tridentine Missal.
From 1884 to 1965, the Holy See prescribed the recitation after Low Mass of certain prayers, originally for the solution of the Roman Question and, after this problem was solved by the Lateran Treaty, "to permit tranquillity and freedom to profess the faith to be restored to the afflicted people of Russia".
These prayers are known as the Leonine Prayers because it was Pope Leo XIII who on 6 January 1884 ordered their recitation throughout the world.
In 1964, with effect from 7 March 1965, the Holy See ended the obligation to recite the Leonine Prayers after Low Mass.
The participation of the congregation at the Tridentine Mass is interior, involving eye and heart, and exterior by mouth.
Except in the Dialogue Mass form, which arose about 1910 and led to a more active exterior participation of the congregation, the people present at the Tridentine Mass do not recite out loud the prayers of the Mass. Only the server or servers join with the priest in reciting the prayers at the foot of the altar (which include the Confiteor) and in speaking the other responses. Most of the prayers that the priest says are spoken inaudibly, including almost all the Mass of the Faithful: the offertory prayers, the Canon of the Mass (except for the preface and the final doxology), and (apart from the Agnus Dei) those between the Lord's Prayer and the postcommunion.
At a Solemn Mass or Missa Cantata, a choir sings the servers' responses, except for the Prayers at the Foot of the Altar. The choir sings the Introit, the Kyrie, the Gloria, the Gradual, the Tract or Alleluia, the Credo, the Offertory and Communion antiphons, the Sanctus, and the Agnus Dei. Of these, only the five that form part of the Ordinary of the Mass are usually sung at a Missa Cantata. In addition to the Gregorian Chant music for these, polyphonic compositions exist, some quite elaborate. The priest largely says quietly the words of the chants.
There are various forms of solemnity of celebration of the Tridentine Mass:
In its article "The Liturgy of the Mass", the 1917 Catholic Encyclopedia describes how, when concelebration ceased to be practised in Western Europe, Low Mass became distinguished from High Mass:
On the origin of the "Missa Cantata", the same source gives the following information about the Tridentine concept at the time:
A Missa brevis is a musical setting of a Mass where the choir and musicians do not perform some parts of the Ordinary of the Mass they potentially could, such as the Gloria or Creed. This is not related to the distinctions above.
Pius XII began in earnest the work of revising the Roman Missal with a revision of the rites of Holy Week, which, after an experimental period beginning in 1951, was made obligatory in 1955.
On 4 December 1963, the Second Vatican Council decreed in Chapter II of its Constitution on the Sacred Liturgy Sacrosanctum Concilium:
The instruction Inter Oecumenici of 26 September 1964 initiated the application to the Mass of the decisions that the Council had taken less than a year before. Permission was given for use, only in Mass celebrated with the people, of the vernacular language, especially in the Biblical readings and the reintroduced Prayers of the Faithful, but, "until the whole of the Ordinary of the Mass has been revised", in the chants (Kyrie, Gloria, Creed, Sanctus, Agnus Dei, and the entrance, offertory and communion antiphons) and in the parts that involved dialogue with the people, and in the Our Father, which the people could now recite entirely together with the priest. Most Episcopal Conferences quickly approved interim vernacular translations, generally different from country to country, and, after having them confirmed by the Holy See, published them in 1965. Other changes included the omission of Psalm 43 (42) at the start of Mass and the Last Gospel at the end, both of which Pope Pius V had first inserted into the Missal (having previously been private prayers said by the priest in the sacristy), and the Leonine Prayers of Pope Leo XIII. The Canon of the Mass, which continued to be recited silently, was kept in Latin.
Three years later, the instruction Tres abhinc annos of 4 May 1967 gave permission for use of the vernacular even in the Canon of the Mass, and allowed it to be said audibly and even, in part, to be chanted; the vernacular could be used even at Mass celebrated without the people being present. Use of the maniple was made optional, and at three ceremonies at which the cope was previously the obligatory vestment the chasuble could be used instead.
Pope Paul VI continued implementation of the Council's directives, ordering with Apostolic Constitution Missale Romanum of Holy Thursday, 3 April 1969, publication of a new official edition of the Roman Missal, which appeared (in Latin) in 1970.
Some Traditionalist Catholics reject to a greater or lesser extent the changes made since 1950. None advocate returning to the original (1570) form of the liturgy, though some may perhaps wish a re-establishment of its form before Pius X's revision of the rubrics in 1911. Some are critical of the 1955 changes in the liturgy of Palm Sunday and the Easter Triduum and in the liturgical calendar (see General Roman Calendar of Pope Pius XII), and instead use the General Roman Calendar as in 1954. Others accept the 1955 changes by Pius XII, but not those of Pope John XXIII. Others again, in accordance with the authorization granted by Pope Benedict XVI in Summorum Pontificum, use the Missal and calendar as it was in 1962. They argue that many of the changes made to the liturgy in 1955 and onward were largely the work of liturgist Annibale Bugnini, whom traditionalists say was more interested in innovation than the preservation of the apostolic traditions of the Church.
Some of them argue that, unlike earlier reforms, the revision of 1969–1970 which replaced the Tridentine Mass with the Mass of Pope Paul VI represented a major break with the past. They consider that the content of the revised liturgy is, in Catholic terms, seriously deficient and defective; some hold that it is displeasing to God, and that no Catholic should attend it.
When a preliminary text of two of the sections of the revised Missal was published in 1969, Archbishop Marcel Lefebvre (who later established Society of Saint Pius X) gathered a group of twelve theologians, who, under his direction, wrote a study of the text. They stated that it "represents, both as a whole and in its details, a striking departure from the Catholic theology of the Mass as it was formulated in Session 22 of the Council of Trent". Cardinal Alfredo Ottaviani, a former Prefect of the Sacred Congregation for the Doctrine of the Faith, supported this study with a letter of 25 September 1969 to Pope Paul VI. Cardinal Antonio Bacci signed the same letter. The critical study became known as "the Ottaviani Intervention". Cardinal Ottaviani subsequently stated in writing that he had not intended his letter to be made public, and that Pope Paul VI's doctrinal exposition, on 19 November and 26 November 1969, of the revised liturgy in its definitive form meant that "no one can be genuinely scandalized any more".
From the 1960s onwards, Western countries have experienced a drop in Mass attendance. For example, in the United States, 75% of Catholics attended church weekly in 1958, declining to 25% attending by 2002; another study suggests a peak weekly attendance of 72% in 1959–60. Western countries also saw a decline in seminary enrollments and in the number of priests (in the United States, from 1,575 ordinations in 1954 to 450 in 2002), and a general erosion of belief in the doctrines of the Catholic faith. Opponents of the revision of the Mass liturgy argue, citing opinion poll evidence in their support, that the revision contributed to this decline. Others, pointing, among other considerations, to the fact that, globally, there are more priests and seminarians now than in previous years (in 1970, there were 72,991 major seminarians worldwide, in 2002, there were 113,199, an increase of 55%, at a time, however, when there was an increase of global population of 64%), suggests that the apparent decline of Catholic practice in the West is due to the general influence of secularism and liberalism on Western societies rather than to developments within the Church. In the United States however, Traditional Catholic parishes have been growing since 2007 even as overall Catholic attendance continues to decline. In 2021, it was estimated that 150,000 Catholics regularly attend the Tridentine Mass in the US, representing less than 1% of the 21 million Catholics regularly attending Mass throughout the US.
Following the introduction of the Mass of Paul VI in 1969–1970, the Holy See granted a significant number of permissions for the use of the former liturgy. For example, elderly priests were not required to switch to celebrating the new form. In England and Wales, occasional celebrations of the Tridentine Mass were allowed in virtue of what became known as the "Agatha Christie indult". However, there was no general worldwide legal framework allowing for the celebration of the rite. Following the rise of the Traditionalist Catholic movement in the 1970s, Pope Paul VI reportedly declined to liberalise its use further on the grounds that it had become a politically charged symbol associated with opposition to his policies.
In 1984, the Holy See sent a letter known as Quattuor abhinc annos to the presidents of the world's Episcopal Conferences. This document empowered diocesan bishops to authorise, on certain conditions, celebrations of the Tridentine Mass for priests and laypeople who requested them. In 1988, following the excommunication of Archbishop Marcel Lefebvre and the four bishops consecrated by him, the Pope issued the motu proprio Ecclesia Dei, which stated that "respect must everywhere be shown for the feelings of all those who are attached to the Latin liturgical tradition". The Pope urged bishops to give "a wide and generous application" to the provisions of Quattuor abhinc annos, and established the Pontifical Commission Ecclesia Dei to oversee relations between Rome and Traditionalist Catholics.
As a cardinal, Joseph Ratzinger was regarded as having a particular interest in the liturgy, and as being favourable towards the pre-Vatican II Mass. Before his election he celebrated it on number of occasions. He criticized the erratic way in which, contrary to official policy, many priests celebrated the post-Vatican II form.
In September 2006, the Pontifical Commission Ecclesia Dei established the Institute of the Good Shepherd, made up of former members of the Society of St. Pius X, in Bordeaux, France, with permission to use the Tridentine liturgy. This step was met with some discontent from French clergy, and thirty priests wrote an open letter to the Pope. In line with its previous stance, the Society of St Pius X rejected the move.
Following repeated rumours that the use of the Tridentine Mass would be liberalised, the Pope issued a motu proprio called Summorum Pontificum on 7 July 2007, together with an accompanying letter to the world's bishops. The declaring that "the Roman Missal promulgated by Paul VI is the ordinary expression of the lex orandi (law of prayer) of the Catholic Church of the Latin rite. Nevertheless, the Roman Missal promulgated by St. Pius V and reissued by St. John XXIII is to be considered as an extraordinary expression of that same 'Lex orandi'". He further stated that "the 1962 Missal ... was never juridically abrogated". He replaced with new rules those of Quattuor Abhinc Annos on use of the older form: essentially, authorization for using the 1962 form for parish Masses and those celebrated on public occasions such as a wedding is devolved from the local bishop to the priest in charge of a church, and "any priest of the Latin rite" may use the 1962 Roman Missal in "Masses celebrated without the people", a term that does not exclude attendance by other worshippers, lay or clergy. While requests by groups of Catholics wishing to use the Tridentine liturgy in parish Masses are to be dealt with by the parish priest (or the rector of the church) rather than, as before, by the local bishop, the Pope and Cardinal Darío Castrillón stated that the bishops' authority is not thereby undermined.
Pope Francis on 16 July 2021 released an Apostolic Letter Motu Proprio, Traditionis custodes, on the use of the Roman Liturgy prior to the Reform of 1970. In Traditionis custodes, the Pope says "the liturgical books promulgated by Saint Paul VI and Saint John Paul II, in conformity with the decrees of Vatican Council II, are the unique expression of the lex orandi of the Roman Rite". He also greatly restricted the use of the Tridentine Mass.
Pope Francis added that it is the exclusive competence of the local bishop to authorize the use of the 1962 Roman Missal in his diocese, according to the guidelines of the Apostolic See.
Pope Francis expressed to the Bishops of the world in his letter accompanying the motu proprio that there is a need in "due time" for those who are attached to the 1962 Mass to return to the celebration of the Mass of Paul VI.
In June 2022, Pope Francis issued the Apostolic Letter Desiderio Desideravi, where he stated that he did not believe the 1962 Missal was the path forward for the Church, insisting that the Church could not "go back to the ritual form which the Council Fathers sought the need to reform".
In February 2023, Pope Francis issued a rescript, clarifying that bishops must obtain authorization from the Holy See before granting permission for parish churches to be used for Eucharistic celebrations with the preconciliar rite and before allowing priests ordained after 16 July 2021 to use the 1962 Roman Missal.
The regulations set out in Traditionis custodes provide that:
The motu proprio Traditionis custodes abrogates all previous norms, instructions, permissions and customs that do not conform to it.
In December 2021, additional restrictions and guidelines were issued by the Congregation for Divine Worship and the Discipline of the Sacraments in the form of a Responsa ad dubia:
In December 2021, in an interview with the National Catholic Register, Arthur Roche, the Prefect for the Congregation in charge of the implementation of Traditionis custodes, reiterated Pope Francis' statement that the Mass according to the Missal promulgated by Paul VI and John Paul II, is "the unique expression of the lex orandi of the Roman Rite". Roche also emphasized that "the liturgy is never simply a matter of personal tastes or preference" and that the lex orandi is "determined by the Church and not individual members". Roche also stated that continuing to allow the celebration of Mass according to the Tridentine form was a concession and that the promotion of the Tridentine Mass has "been curtailed".
In February 2022, the Priestly Fraternity of Saint Peter, a society of apostolic life dedicated to the celebration of the Traditional Liturgy, was granted full permission to celebrate the Traditional Mass, Breviary, Sacraments and the Pontifical Missal. The permission is restricted to the Fraternity's churches and oratories, unless the local ordinary grants permission for priests of the fraternity to celebrate elsewhere in the Diocese, with the exception of private masses.