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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

Difference between the Two Priesthoods

Dr. Peter Kwasniewski · November 13, 2014

0319_Kwasni-96-LG N THIS POST, I would simply like to share two excellent but little-known texts from the Magisterium—one from Pope Pius XII on November 2, 1954 (in which he also quotes liberally from his great 1947 encyclical on the liturgy, Mediator Dei), and the other from the Congregation for the Doctrine of the Faith in 1973.

Here is what Pope Pius XII said on November 2, 1954, to cardinals, archbishops, and bishops gathered in Rome for ceremonies in honor of Our Lady:

THERE ARE SOME who have not ceased claiming a certain true power to offer sacrifice on the part of all, even laymen, who piously assist at the sacrifice of the Mass. Opposing them, We must distinguish truth from error, and do away with all confusion. Seven years ago, in the same Encyclical We just quoted, We reproved the error of those who did not hesitate to state that Christ’s command, “do this in remembrance of Me,” “refers directly to the entire assembly of the faithful, and only afterwards did a hierarchical priesthood follow. Hence, they say, the people possess a true sacerdotal power, the priest acts only on an authority delegated by the community. Wherefore they think that ‘concelebration’ is the true Eucharistic sacrifice, and that it is more fitting for priests and people together to ‘concelebrate’ than to offer the Sacrifice in private, with no congregation present.” We also recalled to mind, in that Encyclical, in what sense the celebrating priest can be said “to take the place of the people”; namely “because he bears the person of Jesus Christ our Lord, Who is the head of all the Members, and offers Himself for them; thus the priest goes to the altar as a minister of Christ, subordinate to Christ, but ranking above the people. The people, however, since in no way do they bear the person of our Divine Redeemer, and are not mediators between themselves and God, cannot in any way share in sacerdotal rights.”

On the other hand, it should not be denied or called in question that the faithful have a kind of “priesthood,” and one may not depreciate or minimize it. For the Prince of the Apostles, in his first Letter, addressing the faithful, uses these words: “You, however, are a chosen race, a royal priesthood, a holy nation, a purchased people” (1 Pet. 2:9); and just before this, he asserts that the faithful possess “a holy priesthood, to offer spiritual sacrifices, acceptable to God through Jesus Christ” (ibid. 2:5). But whatever is the full meaning of this honorable title and claim, it must be firmly held that the “priesthood” common to all the faithful, high and reserved as it is, differs not only in degree, but in essence also, from priesthood fully and properly so called, which lies in the power of offering the sacrifice of Christ Himself, since he bears the person of Christ, the supreme High Priest.

As if to further develop these thoughts, the Congregation for the Doctrine of the Faith issued an instruction in 1973 entitled Mysterium Ecclesiae, which addressed many disputed questions of that turbulent time, including the nature of the ordained ministry. (The internal quotations are taken from the Second Vatican Council’s Dogmatic Constitution on the Church, Lumen Gentium.)

Christ the Lord, the High Priest of the new and everlasting covenant, wished to associate with His perfect priesthood and to form in its likeness the people He had bought with His own blood (cf. Heb. 7:20-22, 26-28; 10:14, 21). He therefore granted His Church a share in His priesthood, which consists of the common priesthood of the faithful and the ministerial or hierarchical priesthood. These differ from each other not only in degree but also in essence; yet they are mutually complementary within the communion of the Church.

The common priesthood of the laity, which is also rightly called a royal priesthood (cf. 1 Pt. 2:9; Rev. 1:6; 5:9ff.) since through it the faithful are united as members of the messianic people with their heavenly King, is conferred by the sacrament of Baptism. By this sacrament “the faithful are incorporated into the Church and are empowered to take part in the worship of the Christian religion” in virtue of a permanent sign known as a character; “reborn as children of God they are obliged to profess before men the faith which they have received from God through the Church.” Thus those who are reborn in Baptism “join in the offering of the Eucharist by virtue of their royal priesthood. They likewise exercise that priesthood by receiving the sacraments, by prayer and thanksgiving, by the witness of a holy life, and by self-denial and active charity.” […]

Priests, acting in the person of Christ the Head, offer this Sacrifice in the Holy Spirit to God the Father in the name of Christ and in the name of the members of His Mystical Body. This sacrifice is completed in the holy supper by which the faithful, partaking of the one body of Christ, are all made into one body (cf. 1 Cor. 10:16ff.).

Please visit THIS PAGE to learn more about Dr. Kwasniewski’s Sacred Choral Works and the audio CDs that contain recordings of the pieces.

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

Filed Under: Articles Last Updated: January 1, 2020

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About Dr. Peter Kwasniewski

A graduate of Thomas Aquinas College (B.A. in Liberal Arts) and The Catholic University of America (M.A. and Ph.D. in Philosophy), Dr. Peter Kwasniewski is currently Professor at Wyoming Catholic College. He is also a published and performed composer, especially of sacred music.

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    Dom Pothier • Photo from 1904
    Dom Paul Cagin, in a 1904 publication (L’oeuvre de Solesmes dans la restauration du chant grégorien) made sure to include a beautiful image of Dom Pothier, the legendary abbot of St-Wandrille. Also shown is a very young Dom André Mocquereau. Auguste Pécoul—considered the spiritual “son” of Abbat Prosper Guéranger of Solesmes—wrote as follows on 24 June 1901: “To forestall any confusion, let us remember that there is just one Gregorian notation—that restored, according to the ancient manuscripts, by the eminent Abbot of Saint-Wandrille, Dom Pothier.” ✠
    —Jeff Ostrowski
    PDF • “3-Voice Motet” (Father De Laet)
    I believe 99% of our readers will recognize this hymn tune. Perhaps Father Edgard De Laet should have called it a ‘hymn’ instead of a ‘motet for three voices’—but he’s technically correct, since MOTET is defined as: “a short piece of sacred choral music, typically polyphonic and unaccompanied.” The even verses are for three voices, as you will see if you download the PDF score at #20245. The odd verses may be song a cappella SATB or unison with organ.
    —Jeff Ostrowski

Quick Thoughts

    PDF Chart • “Plainsong Rhythm”
    I will go to my grave without understanding the lack of curiosity so many people have about the rhythmic modifications made by Dom André Mocquereau. For example, how can someone examine this single sheet comparison chart and at a minimum not be curious about the differences? Dom Mocquereau basically creates a LONG-SHORT LONG-SHORT rhythmic pattern—in spite of enormous and overwhelming manuscript evidence to the contrary. That’s why some scholars referred to his method as “Neo-Mensuralist” or “Neo-Mensuralism.”
    —Jeff Ostrowski
    “Reminder” — Month of January (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. Signing up couldn’t be easier: simply scroll to the bottom of any blog article and enter your email address.
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    PDF • “O Come All Ye Faithful” (Simplified)
    I admire the harmonization of “Adeste Fideles” by David Willcocks (d. 2015), who served as director of the Royal College of Music (London, England). In 2025, I was challenged to create a simplified arrangement for organists incapable of playing the authentic version at tempo. The result was this simplified keyboard arrangement (PDF download) based on the David Willcocks version of “O Come All Ye Faithful.” Feel free to play through it and let me know what you think.
    —Jeff Ostrowski

Random Quote

“Our Christian people regard with great joy everything that contributes to the splendor of the ceremonies. Jesus—who was poor in His private life—received ointment on His feet. See Thomas Aquinas (Prima Secundae, q. 102, art. 5, ad 10) and the holy Curé of Ars. The Church has always loved beautiful churches, and so forth. We must preserve our sacred patrimony and make sure sacred objects do not become secular possessions.”

— Abbot & Council Father denouncing “noble simplicity” during Vatican II

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