This weekend after talking to a visitor at my home, I was struck with a thought. Perhaps many Catholics don't know why "Quo Primum" was written by Pope St. Pius V in 1570. So this is my feeble attempt to write question and answer using the words of Pius V in 1570.
For four hundred years the Roman Mass had been held as sacrosanct until 1962. Actually the changes in the Holy Week proceeded the Missal of John XXIII, but here I am just trying to shed some light on what is actually in "Quo Primum Tempore."
Why did Pope St. Pius V write “Quo Primum? “We gladly turned Our mind and energies, and directed all Our thoughts, to the matter of preserving incorrupt the public worship of the Church;”
Who assigned Pope St. Pius V with the task of revision and re-issuing the sacred books? “Whereas amongst other decrees of the holy Council of Trent, We were charged with revision and re-issue of the sacred books, to wit, the Catechism, the Missal and the Breviary…”
How was this done and what kind of care was taken? "We resolved accordingly to delegate this task to a select committee of scholars; and they, having at every stage of their work and with the utmost care collated the ancient codices in Our Vatican Library and reliable, original or amended, codices from elsewhere, and having also consulted the writing of ancient and approved authors who have bequeathed to us records relating to the said sacred rites, thus restored the Missal [of the Ancient Roman Rite] itself to the pristine form and rite of the holy Fathers."[/i]
Who needs to observe this missal of Pope St. Pius V? “This ordinance to apply to all churches and chapels, with or without care of souls, patriarchal, collegiate, and parochial, be they secular or belonging to any religious Order, whether of men, including the military Orders, or of women, in which conventual Masses are or ought to be sung aloud in choir or read privately according to the rites and customs of the Roman Church.
"To apply, moreover, even if the said churches have been in any way exempted, whether by indult of the Apostolic See, by custom, by privilege, or even by oath or Apostolic confirmation, or have their rights and faculties guaranteed to them in any other way whatsoever, saving only those in which the practice of saying Mass differently was granted over 200 years ago simultaneously with the Apostolic See's institution and confirmation of the church, and those in which there has prevailed a similar custom followed continuously for a period of not less than 200 years; in which cases We in no wise rescind their prerogatives or customs aforesaid.”
Who can use another missal? All other churches aforesaid are hereby denied the use of other missals.
How long is this law in force? “…this present Constitution, which shall have the force of law in perpetuity.”
Can anything be added, omitted or changed? …. that nothing be added to Our newly published Missal, nothing omitted therefrom, and nothing whatsoever altered therein.
Is the missal canonized by Pope St. Pius V (1570) the same as the Missal of John XXIII (otherwise known as the 1962 missal? [The short answer NO] “this Missal must be followed absolutely” and “that nothing be added omitted therefrom, and nothing whatsoever altered therein.
To whom does this apply? We specifically command each and every Patriarch, administrator and all other persons of whatsoever ecclesiastical dignity, be they even Cardinals of the Holy ROMAN Church or possessed of any other rank or preeminence, and We order them by virtue of holy obedience to sing or to read the Mass according to the rite and manner and norm herein laid down by Us, and henceforward to discontinue and utterly discard all other rubrics and rites of other missals, howsoever ancient, which they have been accustomed to follow, and not to presume in celebrating Mass to introduce any ceremonies or recite any prayers other than those contained in this Missal.
Does that include prohibiting celebrating Mass in a man-made rite? …not to presume in celebrating Mass to introduce any ceremonies or recite any prayers other than those contained in this Missal. [It would certainly seem so.]
Can a priest say this missal indefinitely and lawfully? Should a priest fear disobedience of his superior by using this missal? …by virtue of Our Apostolic authority We give and grant in perpetuity that for the singing or reading of Mass in any church whatsoever, this Missal must be followed absolutely, without any scruple of conscience or fear of incurring any penalty, judgment or censure, and may be freely and lawfully used.
Can “Quo Primum” ever be revoked? … and that this present Constitution can never be revoked or modified, but shall forever remain valid and have the force of law…
Has “Quo Primum” been revoked? [No, but it has been ignored, it seems.]