Ad orientem

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A 15th-century bishop celebrates Mass ad orientem.

In the Christian liturgy the expression ad orientem (Latin for "to the east") describes a particular orientation of a priest celebrating Mass.

The literal meaning of the expression indicates that the priest faces eastward, an orientation that has been described as linked with the "cosmic sign of the rising sun which symbolizes the universality of God."[1] Outside of Rome, it was an ancient custom for churches to be built with the entrance at the west end and for priest and people to face eastward to the place of the rising sun.[2]

However, ad orientem is more often used to mean facing the apse or wall behind the altar, with priest and people looking in the same direction (as opposed to the versus populum orientation, in which the priest faces the congregation), even if they are not facing to the east or even have their backs to the east.[3]

A versus populum altar

This distinction between ad orientem and versus populum differs from the usage in the Tridentine Roman Missal, which says: "Si altare sit ad orientem, versus populum, celebrans versa facie ad populum, non vertit humeros ad altare, cum dicturus est Dóminus vobiscum, Oráte, fratres, Ite, missa est, vel daturus benedictionem ..." (If the altar is ad orientem, towards the people, the celebrant, facing the people, does not turn his back to the altar when about to say Dominus vobiscum ["The Lord be with you"], Orate, fratres [the introduction to the prayer over the offerings of bread and wine], and Ite, missa est [the dismissal at the conclusion of the Mass], or about to give the blessing ...)[4]


The earliest churches in Rome had a façade to the east and an apse with the altar to the west; the priest celebrating Mass stood behind the altar, facing east and so towards the people.[5][6]

According to Louis Bouyer, not only the priest but also the congregation faced east at prayer, a view strongly criticized on the grounds of the unlikelihood that, in churches where the altar was to the west, they would turn their backs on the altar (and the priest) at the celebration of the Eucharist. The view prevails therefore that the priest, facing east, would celebrate ad populum in some churches, in others not, in accordance with the churches' architecture.[7]

Anglican Bishop Colin Buchanan writes that there "is reason to think that in the first millennium of the church in Western Europe, the president of the eucharist regularly faced across the eucharistic table toward the ecclesiastical west. Somewhere between the 10th and 12th centuries, a change occurred in which the table itself was moved to be fixed against the east wall, and the president stood before it, facing east, with his back to the people."[8] This change, according to Buchanan, "was possibly precipitated by the coming of tablernacles for reservation, which were ideally both to occupy a central position and also to be fixed to the east wall without the president turning his back to them."[8]

In 7th century England, it is said, Catholic churches were built so that on the very feast day of the saint in whose honor they were named, Mass could be offered on an altar while directly facing the rising sun.[9] However, various surveys of old English churches found no evidence of any such general practice.[10][11][12]

It was in the 8th or 9th century that the position whereby the priest faced the apse, not the people, when celebrating Mass was adopted in the basilicas of Rome.[13] This usage was introduced from the Frankish Empire and later became almost universal in the West.[14] However, the Tridentine Roman Missal continued to recognize the possibility of celebrating Mass "versus populum" (facing the people),[15] and in several churches in Rome, it was physically impossible, even before the twentieth-century liturgical reforms, for the priest to celebrate Mass facing away from the people, because of the presence, immediately in front of the altar, of the "confession" (Latin: confessio), an area sunk below floor level to enable people to come close to the tomb of the saint buried beneath the altar.

A Palm Sunday Mass celebrated ad orientem in 2009.

The present-day Roman Missal does not forbid the ad orientem position for the priest when saying Mass and only requires that in new or renovated churches the facing-the-people orientation be made possible: "The altar should be built apart from the wall, in such a way that it is possible to walk around it easily and that Mass can be celebrated at it facing the people, which is desirable wherever possible."[16] As in some ancient churches the ad orientem position was physically impossible, so today there are churches and chapels in which it is physically impossible for the priest to face the people throughout the Mass.

A letter of 25 September 2000 from the Congregation for Divine Worship and the Discipline of the Sacraments treats the phrase "which is desirable wherever possible" as referring to the requirement that altars be built apart from the wall, not to the celebration of Mass facing the people, while "it reaffirms that the position toward the assembly seems more convenient inasmuch as it makes communication easier ... without excluding, however, the other possibility."[17]

On 13 January 2008, Pope Benedict XVI publicly celebrated Mass in the Sistine Chapel at its altar, which is attached to the west wall.[18] He later celebrated Mass at the same altar in the Sistine Chapel annually for the Feast of the Baptism of the Lord. His celebration of Mass in the Pauline Chapel in the Apostolic Palace on 1 December 2009 was reported to be the first time he publicly celebrated Mass ad orientem on a freestanding altar.[19] In reality, earlier that year the chapel had been remodelled, with "the previous altar back in its place, although still a short distance from the tabernacle, restoring the celebration of all 'facing the Lord'."[20] On 15 April 2010 he again celebrated Mass in the same way in the same chapel and with the same group.[21] The practice of saying Mass at the altar attached to the west wall of the Sistine Chapel on the Feast of the Baptism of the Lord was continued by Pope Francis, when he celebrated the feast for the first time as Supreme Pontiff on 12 January 2014.

Although neither before nor after the 20th-century revision of the Roman Rite did liturgical norms impose either orientation, the distinction became so linked with traditionalist discussion that it was considered journalistically worthy of remark that Pope Francis celebrated Mass ad orientem[22] at an altar at which only this orientation was possible.[23]

An ad orientem altar in an Episcopal church.

With the English Reformation, the Church of England abandoned the eastward position for the celebration of the Holy Eucharist, directing that it be celebrated at a communion table placed lengthwise in the chancel, with the priest standing on the north side of the table and so facing south. Archbishop Laud encouraged a return to the use of the altar at the east end, but in obedience to the rubric in the Book of Common Prayer the priest stood at the north end of the altar. In the middle of the 19th century, the Oxford Movement gave rise to a return to the eastward-facing position, and use of the versus populum position appeared in the second half of the 20th century.[24]

Even when Anglicans abandoned the eastward position for celebration of the Eucharist, turning to the east continued to be observed at certain points of the liturgy, including the praying of the Gloria Patri, Gloria in Excelsis and ecumenical creeds in that direction.[25]

However, over "the course of the last forty years or so, a great many of those altars have either been removed and pulled out away from the wall or replaced by the kind of freestanding table-like altar", in "response to the popular sentiment that the priest ought not turn his back to the people during the service; the perception was that this represented an insult to the laity and their centrality in worship. Thus developed today’s widespread practice in which the clergy stand behind the altar facing the people."[26]

See also


  1. The Spirit of the Liturgy, Cardinal Joseph Ratzinger, Ad Solem, 2006 p. 64
  2. Bishop Julian Porteous, ''After the Heart of God'' (Taylor Trade 2010 ISBN 978-1-58979579-2), p. 25. Retrieved 2014-01-20.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  3. Thus, when Pope Benedict XVI celebrated Mass in the Sistine Chapel on 13 January 2008, his choice of orientation was described as ad orientem (Phil Lawler, Ad Orientem, The Single Most Important Reform), although he was in fact facing the west wall of the chapel (Catholic News Service: Not exactly 'ad orientem').
  4. Ritus servandus in celebratione Missae, V, 3 (page LVII in the 1962 edition of the Roman Missal)
  5. The Oxford Dictionary of the Christian Church (Oxford University Press 2005 ISBN 978-0-19-280290-3), article "orientation"
  6. "When Christians in fourth-century Rome could first freely begin to build churches, they customarily located the sanctuary towards the west end of the building in imitation of the sanctuary of the Jerusalem Temple. Although in the days of the Jerusalem Temple the high priest indeed faced east when sacrificing on Yom Kippur, the sanctuary within which he stood was located at the west end of the Temple. The Christian replication of the layout and the orientation of the Jerusalem Temple helped to dramatize the eschatological meaning attached to the sacrificial death of Jesus the High Priest in the Epistle to the Hebrews" (The Biblical Roots of Church Orientation by Helen Dietz).
  7. Michel Remery, ''Mystery and Matter'' (Brill 2010 ISBN 978-9-00418296-7), p. 179. 2010-12-20. Retrieved 2014-01-20.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  8. 8.0 8.1 Buchanan, Colin (27 February 2006). Historical Dictionary of Anglicanism. Scarecrow Press. p. 472. ISBN 9780810865068.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  9. Andrew Louth, "The Body in Western Catholic Christianity," in Religion and the Body, ed. by Sarah Coakley, (Cambridge, 2007) p. 120.
  10. Ian Hinton, "Churches face East, don't they?" in British Archaeology
  11. Jason R. Ali, Peter Cunich, "The orientation of churches: Some new evidence" in The Antiquaries Journal
  12. Peter G. Hoare and Caroline S. Sweet, "The orientation of early medieval churches in England" in Journal of Historical Geography 26, 2 (2000) 162–173
  13. The Oxford Dictionary of the Christian Church (Oxford University Press 2005 ISBN 978-0-19-280290-3), article "westward position"
  14. The Oxford Dictionary of the Christian Church (Oxford University Press 2005 ISBN 978-0-19-280290-3), article "eastward position"
  15. Ritus servandus in celebratione Missae, V, 3
  16. "General Instruction of the Roman Missal". p. 299.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  17. English translation of Letter of protocol number 2036/00/L and date 25 September 2000
  18. Isabelle de Gaulmyn, Benedict XVI celebrated a Mass "back to the people" in La Croix, 15 January 2008
  19. Kollmorgen, Gregor (15 January 2008). "Pope Celebrates Ad Orientem in the Pauline Chapel". New Liturgical Movement.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  20. "Sandro Magister, "The Pauline Chapel Reopened for Worship. With Two New Features", 6 July 2009" (in italiano). Retrieved 2014-08-21.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  21. Kollmorgen, Gregor (15 April 2010). "Holy Father Celebrates Mass with the Pontifical Biblical Commission". New Liturgical Movement.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  22. Stanley, Tim (2013-11-01). "Pope Francis says Mass "ad orientem"". Retrieved 2014-01-20.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  23. West, Ed (2011-05-03). "''Catholic Herald'', 3 May 2011: "First images of John Paul II's new tomb"". Retrieved 2014-01-20.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  24. Heflig, Charles; Shattuck, Cynthia (2006). The Oxford Guide to the Book of Common Prayer. Oxford University Press. pp. 106–115. ISBN 9780199723898. Retrieved 8 February 2015.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  25. Russell, Bruce (24 September 2006). "Gestures of Reverence in Anglican Worship". The Diocese of Saskatchewan. Retrieved 22 June 2014. In subsequent centuries the practice was clearly understood as rooted in Scripture and tradition and survived the Reformation in the Church of England. According to Dearmer: The ancient custom of turning to the East, or rather to the altar, for the Gloria Patri and the Gloria in Excelsis survived through the slovenly times, and is now common amongst us. (The choir also turned to the altar for the intonation of the Te Deum, and again for its last verse.) We get a glimpse of the custom after the last revision [i.e. 1662] from a letter which Archdeacon Heweston wrote in 1686 to the great Bishop Wilson (then at his ordination as deacon), telling him to ‘turn towards the East whenever the Gloria Patri and the Creeds are rehearsing’: of this and other customs he says, ‘which thousands of good people of our Church practice at this day.’ The practice here mentioned of turning to the East for the Creeds was introduced by the Caroline divines, and has established itself firmly amongst us, though it is not embodied in a rubric at the last revision as were some of the other ceremonial additions of the Laudian school. It thus rests upon a common English custom three centuries old, and it is in every way an excellent practice. But it may well be doubted whether there is any reason for turning to the East to sing that ’Confession of our Christian Faith’ which is ‘commonly called the Creed of Saint Athanasius’… the proper use is to turn to the altar only for the Gloria Patri at its conclusion. [p. 198-199] It should be made clear that showing reverence to the altar or holy table, (historically Anglicans have used these terms interchangeably with varying emphasis over the centuries), when passing it, or in coming or going from the church etc. are indications of reverence for what occurs upon it, and not to be confused with turning to the East for the Creed, or when expressly addressing the Blessed Trinity in praise. This is admittedly slightly confusing, especially in churches which do not have an actual Eastward orientation. In such cases the direction of the church is presumed to be symbolically Eastward, and facing the direction of the principal altar is taken as East-facing, but Anglicans do not, as is sometimes supposed, face the altar for the Creed etc., rather it is the altar is aligned with our actual or symbolic orientation. The Hierurgia Anglicana records that the ancient practice of Eastward recitations were still retained at Manchester Cathedral in 1870, and Procter and Frere record that the custom at Salisbury, for recitation of the Nicene Creed only, “was for the choir to face the altar at the opening words, till they took up the signing, to turn to the altar again for the bowing at the Incarnatus, and again at the last clause to face the altar until the Offertory.” [p. 391] J. Wickham Legg observed : It will be noticed how persistent has been the custom in the Church of England of turning to the East at the Apostles’ Creed. Toward the end of the nineteenth century certain persons, hangers onto the High Church school, though unworthy of that honored name, discovered that the custom was only English, and they discontinued it in their persons.” However Legg points out that it was recorded in seventeenth century France and it would seem to have been rather more widely observed than the Anglo-papalists he decries could have known. This would seem to be another instance of the liturgical conservatism of the British Church preserving a distinctive and once more universal expression of popular devotion otherwise abandoned. Another instance of orientation was the now much rarer custom of turning to the East for the Doxology at the conclusion of the recitation of each Psalm, particularly by those in choir. This was the custom at Probus in Cornwall in the early years of the nineteenth century, as it was in rural North Devon long before the influence of Puseyism: “all the singing time they used to face West, staring at the gallery, with its faded green curtains; and then; when the Gloria came, they all turned ‘right about’ and faced Eastward.” [Legg, p. 180] ... Some evangelical Anglicans argue strongly against the Eastward position, yet as we have noted its use is documented in the earliest records of the Church. They especially oppose it for the celebrant during the Holy Communion because it seems to them to imply an unacceptable theology of priestly sacrifice. In doing so they neglect to notice the arbitrariness of the North position; the South side, for example, would offer an equally unimpeded view of the celebrant’s actions. The early Reformers, who were the advocates of the North position, had in mind the instructions given in Leviticus, that the priest shall sacrifice animal offerings ‘on the side of the altar northward’ [i: 11] and as such its use implies the exact opposite of what contemporary Evangelicals presume is intended.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  26. Liles, Eric J. (2014). "The Altar". St. Paul's Episcopal Church. The Episcopal Church. Many Episcopalians remember a time when the altars in most Episcopal churches were attached to the wall beyond the altar rail. The Celebrant at the Eucharist would turn to the altar and have his back – his back, never hers in those days – to the congregation during the Eucharistic Prayer and the consecration of the bread and wine. Over the course of the last forty years or so, a great many of those altars have either been removed and pulled out away from the wall or replaced by the kind of freestanding table-like altar we now use at St. Paul’s, Ivy. This was a response to the popular sentiment that the priest ought not turn his back to the people during the service; the perception was that this represented an insult to the laity and their centrality in worship. Thus developed today’s widespread practice in which the clergy stand behind the altar facing the people.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>