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Pope Saint Paul VI (3 April 1969): “Although the text of the Roman Gradual—at least that which concerns the singing—has not been changed, the Entrance antiphons and Communions antiphons have been revised for Masses without singing.”

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Views from the Choir Loft

“Ad Orientem” and Granovetter’s Threshold Models of Collective Behavior

Richard J. Clark · August 5, 2016

RJC_Francis_Ad-Orientem Pope Francis celebrates “ad orientem” • altar of St. John Paul II • 31 October 2013 ’M A BIT LATE to the party. Copious ink has already been spilled regarding Cardinal Sarah’s address at the Sacra Liturgia conference in London and his comments regarding celebrating Mass ad orientem in the Novus Ordo (“New order of the Mass”). Robert Cardinal Sarah was appointed by Pope Francis as Prefect for the Vatican’s CONGREGATION FOR DIVINE WORSHIP in 2014.

I’ve watched as many have been freaking out over Cardinal Sarah’s encouragement to follow rubrics that have been in place for over fifty years since Vatican II. The anxiety was so palpable that United States Conference of Catholic Bishops Committee on Divine Worship felt compelled to diffuse the brewing controversy in a letter clarifying that “no changes to the General Instruction of the Roman Missal are expected at this time, nor is there a new mandate for the celebrant to face away from the assembly.”

No new instructions. No new mandate. That’s exactly right and exactly the point.

The overreaction to Cardinal Sarah’s address is quite understandable because precious few Catholics know what ad orientem in the Novus Ordo is and what it is not. Lack of knowledge is not the people’s fault. In fact, they deserve to know the truth. It is time for catechesis to begin and for ignorance to end so that the faithful may develop their own informed opinions.

Andrew Leung has helpfully pointed out a few common misunderstandings. The most important misconception is that the priest faces the altar throughout the entire Mass. This is not even close to the truth. Leung sets the record straight in his article, Three False Ideas about “Ad Orientem” Celebration. The reality is a hybrid: the priest faces the people for most of the Mass, but faces the altar during the Liturgy of the Eucharist (with specific exceptions):

In the Novus Ordo, the priest begins the Introductory Rite at the presider’s chair, which faces the people in most cases. The Liturgy of the Word takes place at the ambo facing the people. The part celebrated ad orientem is the Liturgy of the Eucharist…After the Liturgy of the Eucharist, the priest returns to the presider’s chair for the Concluding Rite.

The following cannot be emphasized enough: When addressing the people (e.g., in the dialogues), the priest turns to face the people. When offering sacrifice to God, the priest faces the altar. Leung outlines the important distinctions, indicated in the rubrics here.

The priest is instructed by the rubrics to turn towards the people when he addresses them in the Liturgy of the Eucharist (at Oratre fratres; Pax Domini sit semper; and Ecce Agnus Dei).

ETTING BACK TO THE “freaking out”—understand this: the Novus Ordo finds both acceptable and always has. It is not an “either/or” but “both/and.” While the Roman Missal assumes Masses are celebrated ad orientem (hence the rubrics specify “facing the people” at specific times) the General Instruction of the Roman Missal (controversy over translation aside) states the following: “The altar should be built separate 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.” (GIRM §299)

I am not advocating one way over the other at this time because our greatest priority is to celebrate the Mass with dignity and reverence. Facing East or West is secondary for now. But some find ad orientem a useful tool to this end. Regardless, we have much to learn from each practice and from the collective wisdom of the ages.

HILE “AD ORIENTEM” carries with it a good deal of emotional baggage for some, young Roman Catholics bring fresh perspectives not held by their parents and grandparents. With each passing year, the tide is turning. But adopting a different practice—even if from time to time—will be slow.

So what will this take?

THIS IS WHERE SOCIOLOGIST, Mark Granovetter comes in. His landmark 1978 publication Threshold Models of Collective Behavior (American Journal of Sociology 83 [May]: 489-515) is anything but dull. It has been applied to explaining everything from riots, the NFL draft, and miscues by politicos. (His theory is much discussed in this fascinating episode of WBEZ’s popular This American Life.)

Its main premise “is that of ‘threshold’: the number or proportion of others who must make one decision before a given actor does so.” Simply put, human nature dictates that many people are unwilling to act a certain way—even if one knows it’s a better choice—unless they see others doing it first. Many won’t “jump in” unless a large number of people are already engaging in a particular activity.

Key to this understanding, Granovetter explains that the “threshold” is different for different people. E.g., Many Millennials may have a lower threshold for adopting new digital technology while those of retirement age may have a higher threshold.

The threshold of a congregation is in play too, possibly causing the threshold of any pastor to be that much higher. What is required is a pastor with a “low threshold” who is willing to do the hard work of catechesis and willing to finesse the inevitable complaints that follow.

HE “SPIRIT OF VATICAN II” sometimes contradicts Vatican II. For decades, we were told that the priest celebrated Mass (for over a millennium) with his “back to the people.” Quite interestingly, in the early 1990s, one of my choir members opened my eyes to a new way of thinking. It was new to me then and will be new to many today. He said, “You know, the old Latin Mass made sense in this regard: the people and the priest faced the same way. They faced God together.”

I propose the idea that the Novus Ordo, a hybrid of both facing the people and facing God, got it right—a “both/and” scenario consistent with both Vatican II and the “Spirit of Vatican II.”

I propose the notion that priest and people facing God together is an act of unity. “…they are to form one body, whether in hearing the Word of God, or in taking part in the prayers and in the singing, or above all by the common offering of the Sacrifice and by participating together at the Lord’s table. This unity is beautifully apparent from the gestures and bodily postures observed together by the faithful.” (GIRM No. 96)

I propose the possibility that doing so deemphasizes the centrality of the priest (a humble servant acting In persona Christi), places him in union with the faithful, and ultimately emphasizes the centrality of Christ.

I acknowledge the reality that most of the faithful are not ready to embrace ad orientem on a regular basis, if at all. Perhaps in time, those with a “lower threshold” will model this and more may someday follow.

I hope someday, ad orientem will be less frightening when people actually know what it is, why it is, and what it is not. My hope is that it will be normative—“no big deal!”

But most assuredly, Jesus loves you no matter which way the priest faces. Don’t freak out!

Opinions by blog authors do not necessarily represent the views of Corpus Christi Watershed.

Filed Under: Articles Tagged With: Ad Orientem, Bishop Arthur J Serratelli Vox Clara, Robert Cardinal Sarah Last Updated: February 18, 2023

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About Richard J. Clark

Richard J. Clark is the Director of Music of the Archdiocese of Boston and the Cathedral of the Holy Cross.—(Read full biography).

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Corpus Christi Watershed

President’s Corner

    PDF Download • “For Pentecost Sunday”
    Yesterday morning, I recorded myself singing the ENTRANCE CHANT for Pentecost Sunday while simultaneously accompanying myself on the pipe organ. Click here to see how that came out. At the end of the antiphon, there’s a triple Allelúja and I just love the chord at the end of the 2nd iteration. The organ accompaniment—along with the musical score for singers—can be downloaded free of charge at the flourishing feasts website. For the record, the antiphon on Pentecost Sunday doesn’t come from a psalm; it comes from the book of Wisdom.
    —Jeff Ostrowski
    PDF Download • “Organ Accompaniment”
    Over the past few years, I’ve been harmonizing all the vernacular plainsong Introit settings by the CHAUMONOT COMPOSERS GROUP. This coming Sunday—10 May 2026—is the 6th Sunday of Easter (Year A). The following declaration will probably smack of “blowing my own horn.” However, I’d rank this accompaniment as my best yet. In this rehearsal video, I attempt to sing it while simultaneously accompanying myself on the pipe organ. The musical score [for singers] as well as my organ accompaniment can be downloaded free of charge from the flourishing feasts website.
    —Jeff Ostrowski
    “Gregorian Chant Quiz” • 4 May 2026
    A few days ago, the CORPUS CHRISTI WATERSHED Facebook page posted this Gregorian Chant quiz regarding a rubric for the SEQUENCE for the feast of Corpus Christi: “Lauda Sion Salvatórem.” There is no audience more intelligent than ours—yet surprisingly nobody has been able to guess the rubric. Drop me an email with the right answer, and I’ll affirm your brilliance to everyone I encounter!
    —Jeff Ostrowski

Quick Thoughts

    “Thee” + “Thou” + “Thine”
    Few musicians realize that various English translations of Sacred Scripture were granted formal approval by the USCCB and the Vatican for liturgical use in the United States of America. But don’t take my word for it! Here are four documents proving this, which you can examine with your own eyes. Some believe the words “Thine” and “Thou” and “Thee” were forbidden after Vatican II—but that’s incorrect. For example, they’re found in the English translation of the ‘Our Father’ at Mass. Moreover, the Revised Standard Version (Catholic Edition) mentioned in those four documents employs “Thine” and “Thou” and “Thee.” It was published with a FOREWORD by Westminster’s Roman Catholic Archbishop (John Cardinal Heenan).
    —Jeff Ostrowski
    “Reminder” — Month of May (2026)
    On a daily basis, I speak to people who don’t realize we publish a free newsletter (although they’ve followed our blog for years). We have no endowment, no major donors, no savings, and refuse to run annoying ads. As a result, our mailing list is crucial to our survival. It couldn’t be easier to subscribe! Just scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski
    Simplified Version • “Canon in D” (Pachelbel)
    I published an article on 11 November 2023 called Wedding March For The Lazy Organist, which rather offhandedly made reference to a simplified version I created in 2007 for Pachelbel’s Canon. I often use it as a PROCESSIONAL for weddings and quinceañeras. Many organists say they “hate” Pachelbel’s Canon. But I love it. I think it’s bright and beautiful. I created that ‘simplified version’ for musicians coming to grips with playing the pipe organ. It can be downloaded as a free PDF if you visit Andrea Leal’s article dated 15 August 2022: Manuals Only: Organ Interludes Based on Plainsong. Specifically, it is page 84 in that collection—generously offered as a free PDF download. Johann Pachelbel (d. 1706) was a renowned German organist, violinist, teacher, and composer of over 500 works. A friend of Bach’s family, he taught Johann Christoph Bach (Sebastian Bach’s eldest brother) and lived in his house. Those who read Pachelbel’s biography will notice his connection to two German cities adopted as famous hymn tune names: EISENACH and ERFURT.
    —Jeff Ostrowski

Random Quote

“Thus, by the celebration of a single Mass (in which he offers Jesus Christ in sacrifice), a priest gives greater honor to the Lord than if all men by dying for God offered to him the sacrifice of their lives. By a single Mass, he gives greater honor to God than all the angels and saints—along with the Blessed Virgin Mary—have given or shall give to him; for their worship cannot be of infinite value, like that which the priest celebrating on the altar offers to God.”

— Saint Alphonsus Liguori

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