Summorum Pontificum cura ad hoc tempus usque semper fuit, ut Christi Ecclesia Divinae Maiestati cultum dignum offerret, «ad laudem et gloriam nominis Sui» et «ad utilitatem totius Ecclesiae Suae sanctae».

Up to our own times, it has been the constant concern of supreme pontiffs to ensure that the Church of Christ offers a worthy ritual to the Divine Majesty, "to the praise and glory of His name," and "to the benefit of all His Holy Church."
 

Among the pontiffs who showed that requisite concern, particularly outstanding is the name of St. Gregory the Great, who made every effort to ensure that the new peoples of Europe received both the Catholic faith and the treasures of worship and culture that had been accumulated by the Romans in preceding centuries. He commanded that the form of the sacred liturgy as celebrated in Rome (concerning both the Sacrifice of Mass and the Divine Office) be conserved. He took great concern to ensure the dissemination of monks and nuns who, following the Rule of St. Benedict, together with the announcement of the Gospel illustrated with their lives the wise provision of their Rule that 'nothing should be placed before the work of God.' In this way the sacred liturgy, celebrated according to the Roman use, enriched not only the faith and piety but also the culture of many peoples. It is known, in fact, that the Latin liturgy of the Church in its various forms, in each century of the Christian era, has been a spur to the spiritual life of many saints, has reinforced many peoples in the virtue of religion and fecundated their piety.
 

Many other Roman pontiffs, in the course of the centuries, showed particular solicitude in ensuring that the sacred liturgy accomplished this task more effectively. Outstanding among them is St. Pius V who, sustained by great pastoral zeal and following the exhortations of the Council of Trent, renewed the entire liturgy of the Church, oversaw the publication of liturgical books amended and 'renewed in accordance with the norms of the Fathers,' and provided them for the use of the Latin Church.
 

Inter Ritus romani libros liturgicos patet eminere Missale Romanum, quod in romana urbe succrevit, atque succedentibus saeculis gradatim formas assumpsit, quae cum illa in generationibus recentioribus vigente magnam habent similitudinem.

One of the liturgical books of the Roman rite is the Roman Missal, which developed in the city of Rome and, with the passing of the centuries, little by little took forms very similar to that it has had in recent times.
 

«Quod idem omnino propositum tempore progrediente Pontifices Romani sunt persecuti, cum novas ad aetates accommodaverunt aut ritus librosque liturgicos determinaverunt, ac deinde cum ineunte hoc nostro saeculo ampliorem iam complexi sunt redintegrationem»[2]. Sic vero egerunt Decessores nostri Clemens VIII, Urbanus VIII, sanctus Pius X[3], Benedictus XV, Pius XII et beatus Ioannes XXIII.

"It was towards this same goal that succeeding Roman Pontiffs directed their energies during the subsequent centuries in order to ensure that the rites and liturgical books were brought up to date and when necessary clarified. From the beginning of this century they undertook a more general reform.' (2) Thus our predecessors Clement VIII, Urban VIII, St. Pius X (3), Benedict XV, Pius XII and Blessed John XXIII all played a part.
 

Recentioribus autem temporibus, Concilium Vaticanum II desiderium expressit, ut debita observantia et reverentia erga cultum divinum denuo instauraretur ac necessitatibus nostrae aetatis aptaretur. Quo desiderio motus, Decessor noster Summus Pontifex Paulus VI libros liturgicos instauratos et partim innovatos anno 1970 Ecclesiae latinae approbavit; qui ubique terrarum permultas in linguas vulgares conversi, ab Episcopis atque a sacerdotibus et fidelibus libenter recepti  sunt. Ioannes Paulus II, tertiam editionem typicam Missalis Romani recognovit. Sic Romani Pontifices operati sunt ut «hoc quasi aedificium liturgicum [...] rursus, dignitate splendidum et concinnitate» appareret[4].
 

In more recent times, Vatican Council II expressed a desire that the respectful reverence due to divine worship should be renewed and adapted to the needs of our time. Moved by this desire our predecessor, the Supreme Pontiff Paul VI, approved, in 1970, reformed and partly renewed liturgical books for the Latin Church. These, translated into the various languages of the world, were willingly accepted by bishops, priests and faithful. John Paul II amended the third typical edition of the Roman Missal. Thus Roman pontiffs have operated to ensure that 'this kind of liturgical edifice ... should again appear resplendent for its dignity and harmony.' (4)

Aliquibus autem in regionibus haud pauci fideles antecedentibus formis liturgicis, quae eorum culturam et spiritum tam profunde imbuerant, tanto amore et affectu adhaeserunt et adhaerere pergunt, ut Summus Pontifex Ioannes Paulus II, horum fidelium pastorali cura motus, anno 1984 speciali Indulto “Quattuor abhinc annos”, a Congregatione pro Cultu Divino exarato, facultatem concessit utendi Missali Romano a Ioanne XXIII anno 1962 edito; anno autem 1988 Ioannes Paulus II iterum, litteris Apostolicis “Ecclesia Dei” Motu proprio datis, Episcopos exhortatus est ut talem facultatem late et generose in favorem omnium  fidelium id petentium adhiberent

But in some regions, no small numbers of faithful adhered and continue to adhere with great love and affection to the earlier liturgical forms. These had so deeply marked their culture and their spirit that in 1984 the Supreme Pontiff John Paul II, moved by a concern for the pastoral care of these faithful, with the special indult 'Quattuor abhinc annos," issued by the Congregation for Divine Worship, granted permission to use the Roman Missal published by Blessed John XXIII in the year 1962. Later, in the year 1988, John Paul II with the Apostolic Letter given as Motu Proprio, 'Ecclesia Dei,' exhorted bishops to make generous use of this power in favor of all the faithful who so desired.
 

Instantibus precibus horum fidelium iam a Praedecessore Nostro Ioanne Paulo II diu perpensis, auditis etiam a Nobis Patribus Cardinalibus in Concistorio die XXIII mensis martii anni 2006 habito, omnibus mature perpensis, invocato Spiritu Sancto et Dei freti auxilio, praesentibus Litteris Apostolicis DECERNIMUS quae sequuntur:

Proinde Missae Sacrificium, iuxta editionem typicam Missalis Romani a B. Ioanne XXIII anno 1962 promulgatam et numquam abrogatam, uti formam extraordinariam Liturgiae Ecclesiae, celebrare licet. Conditiones vero a documentis antecedentibus “Quattuor abhinc annos” et “Ecclesia Dei” pro usu huius Missalis statutae, substituuntur ut sequitur:

Art. 2. In Missis sine populo celebratis, quilibet sacerdos catholicus ritus latini, sive saecularis sive religiosus, uti potest aut Missali Romano a beato Papa Ioanne XXIII anno 1962 edito, aut Missali Romano a Summo Pontifice Paulo VI anno 1970  promulgato, et quidem qualibet die, excepto Triduo Sacro. Ad talem celebrationem secundum unum alterumve Missale, sacerdos nulla eget licentia, nec Sedis Apostolicae nec Ordinarii sui.

Art. 3. Si communitates Institutorum vitae consecratae atque Societatum vitae apostolicae iuris sive pontificii sive dioecesani quae in celebratione conventuali seu “communitatis” in oratoriis propriis celebrationem sanctae Missae iuxta editionem Missalis Romani anno 1962 promulgatam habere cupiunt, id eis licet. Si singula communitas aut totum Institutum vel Societas tales celebrationes saepe vel plerumque vel permanenter perficere vult, res a Superioribus maioribus ad normam iuris et secundum leges et statuta particularia decernatur.

Art. 4. Ad celebrationes sanctae Missae de quibus supra in art. 2 admitti possunt, servatis de iure servandis, etiam christifideles qui sua sponte id petunt.

Art. 5. § 1. In paroeciis, ubi coetus fidelium traditioni liturgicae antecedenti adhaerentium continenter exsistit, parochus eorum petitiones ad celebrandam sanctam Missam iuxta ritum Missalis Romani anno 1962 editi, libenter suscipiat. Ipse videat ut harmonice concordetur bonum horum fidelium cum ordinaria paroeciae pastorali cura, sub Episcopi regimine ad normam canonis 392, discordiam vitando et totius Ecclesiae unitatem fovendo.

Art. 5. § 1 In parishes, where there is a stable group of faithful who adhere to the earlier liturgical tradition, the pastor should willingly accept their requests to celebrate the Mass according to the rite of the Roman Missal published in 1962, and ensure that the welfare of these faithful harmonises with the ordinary pastoral care of the parish, under the guidance of the bishop in accordance with canon 392, avoiding discord and favouring the unity of the whole Church.
   

§ 2. Celebratio secundum Missale B. Ioannis XXIII locum habere potest diebus ferialibus; dominicis autem et festis una etiam celebratio huiusmodi fieri potest.

§ 3. Fidelibus seu sacerdotibus id petentibus, parochus celebrationes, hac in forma extraordinaria, permittat etiam in adiunctis peculiaribus, uti sunt matrimonia, exsequiae aut celebrationes occasionales, verbi gratia peregrinationes.

§ 3 For faithful and priests who request it, the pastor should also allow celebrations in this extraordinary form for special circumstances such as marriages, funerals or occasional celebrations, e.g. pilgrimages.
   

§ 4. Sacerdotes Missali B. Ioannis XXIII utentes, idonei esse debent ac iure non impediti.

§ 5. In ecclesiis, quae non sunt nec paroeciales nec conventuales, Rectoris ecclesiae est concedere licentiam de qua supra.

Art. 6. In Missis iuxta Missale B. Ioannis XXIII celebratis cum populo, Lectiones proclamari possunt etiam lingua vernacula, utendo editionibus ab Apostolica Sede recognitis.

Art. 7. Ubi aliquis coetus fidelium laicorum, de quo in art. 5 § 1 petita a parocho non obtinuerit, de re certiorem faciat Episcopum dioecesanum. Episcopus enixe rogatur ut eorum optatum exaudiat. Si ille ad huiusmodi celebrationem providere non potest res ad Pontificiam Commissionem “Ecclesia Dei” referatur.

Art. 8. Episcopus, qui vult providere huiusmodi petitionibus christifidelium laicorum, sed ob varias causas impeditur, rem Pontificiae Commissioni “Ecclesia Dei” committere potest, quae ei consilium et auxilium dabit.

Art. 8. A bishop who, desirous of satisfying such requests, but who for various reasons is unable to do so, may refer the problem to the Commission "Ecclesia Dei" to obtain counsel and assistance.
 

Art. 9. § 1. Parochus item, omnibus bene perpensis, licentiam concedere potest utendi rituali antiquiore in administrandis sacramentis Baptismatis, Matrimonii, Poenitentiae et Unctionis Infirmorum,  bono animarum id suadente.

Art. 9. § 1 The pastor, having attentively examined all aspects, may also grant permission to use the earlier ritual for the administration of the Sacraments of Baptism, Marriage, Penance, and the Anointing of the Sick, if the good of souls would seem to require it.
 

§ 2. Ordinariis autem facultas conceditur celebrandi Confirmationis sacramentum utendo Pontificali Romano antiquo, bono animarum id suadente.

§ 3. Fas est clericis in sacris constitutis uti etiam Breviario Romano a B. Ioanne XXIII anno 1962 promulgato.

Art 10. Fas est Ordinario loci, si opportunum iudicaverit, paroeciam personalem ad normam canonis 518 pro celebrationibus iuxta formam antiquiorem ritus romani erigere aut rectorem vel cappellanum nominare, servatis de iure servandis.