From a reader:
Does the [Novus Ordo] preclude the possibility of a priest serving as a deacon and not concelebrating?
From the Caeremoniale Episcoporum:
“22. Presbyteri, qui celebrationes episcopales participant, id solum quod ad presbyteros spectat agant; (SC n. 28) absentibus vero diaconis, aliqua diaconorum ministeria suppeant, numquam tamen vestibus diaconalibus induti.” … “Let priests taking part in a celebrations by bishops, do only that which pertains to priests; but if deacons are absent, they may fill in some of the ministries of deacons, but never dressed in diaconal vestments.”
The Ceremonial of Bishops does not allow a priest ever to vest as a deacon when the bishop is celebrant. It doesn’t say that they can’t do that when a priest is celebrating, though it seems to be implied. It does, however, allow a bishop to dress as a deacon, for a bishop may wear the dalmatic beneath his chasuble. Furthermore, in the papal ceremonies, bishops, indeed cardinals who are consecrated bishops of the order in the College of Cardinal Deacon, dress in the dalmatic and accompany the Roman Pontiff quite often.
In any event, I confess that, many years ago, I stepped in for a solemn Mass in the Ordinary Form – it would have been before 1995, I am sure, and, dressed as a deacon but not concelebrating, filled in a deacons role.
I have also put on the dalmatic to sing the Exsultet in the Ordinary Form. Yes, I have done that. And I will probably do it again! Yes, that’s right! I am still also a deacon, after all.
And don’t forget the maniples!