Another problem with the una cuм declaration is that it is a sin against the profession of the Faith.
As much as it is necessary for the Catholic priest to mention the name of the reigning pontiff as a sign of his communion with him and the Catholic Church as a whole, it is equally necessary for him to avoid mentioning the name of anyone who is not in communion with the Catholic Church. When schismatics were reconciled to the Catholic Church, they had to omit, as part of their sign of adherence, the names of their schismatic Patriarchs from the canon of the Mass. In his Bibliotheca, Fr. Ferraris cites the case of a schismatic bishop who was reconciled to Rome. The papal legates reassure the pope that, during the course of the Mass, no name was mentioned which was odious to the Catholic Faith:
“Finally the legates of [Pope] Hormisda recount to the Pope with these words what happened to them during the reconciliation of the bishop of the city of Troili Scampina: We confess, they said, that it would be hard to find in another people so much devotion to you Holiness, so much praise to God, so many tears and so much joy. Nearly all the people received us into the city , both the men and the women with candles, and the soldiers with crosses. Masses were celebrated, and no name which is loathsome to religion was mentioned but only that of Your Holiness.”
He also mentions that it is licit to pray for the conversion of infidels, heretics and schismatics in the Memento of the living, since it is a private and not a public prayer, thereby implying that it would not be licit to mention them publicly:
“The priest should be warned however [with Azor. lib X, cap. 22, quæst. 3,] that he can correctly pray in the Memento for the conversion of infidels, heretics and schismatics, since this is a private and not public prayer.”[4]
Benedict XIV (14) himself ordered the Italo-Greeks to mention the name of the Pope and local bishop, lest there be any suspicion of schism among them, and furthermore forbade from mentioning the name of a schismatic Patriarch:
“The second part of the same warning follows in which, as was noted above, the Greek priest is enjoined, during the Mass, after he has prayed for the Roman Pontiff, to pray also for his own bishop, and for his Patriarch, provided that they be Catholic; for if one or the other or both were a schismatic or a heretic, he would not be permitted to make a mention of them.”[5]
Pope Benedict, in fact, makes frequent warning of the necessity not to mention the name of anyone who is a schismatic or a heretic:
“...but let him carefully avoid making mention of the names of schismatics or heretics.”
“Nor is he [the Greek priest] generally prohibited, in the often cited Monitum, from making mention of the Patriarch, but only in the case where the Metropolitans or Patriarchs should be schismatics or heretics...”[6]
He then cites three cases in which priests were specifically forbidden by the Holy Office to mention the name of schismatic prelates, in 1673, 1674 and 1732 respectively. The one in 1673 is of special interest, since the priest’s motive in mentioning the name of the schismatic was to attract the schismatics to the Catholic Church. The answer was it is absolutely forbidden. Put that in your ecuмenical pipe and smoke it.
Pope Benedict states that the reason for this prohibition is that heretics and schismatics are excommunicates, and it is not licit to pray publicly for excommunicates: “The Sacred Canons of the Church prohibit praying for excommunicates...And although there is nothing wrong with praying for their conversion, this must not be done by pronouncing their names in the solemn prayer of the Sacrifice. This observance is in accordance with the traditional discipline...”[7]He furthermore quotes St. Thomas: “One can pray for excommunicates, although not in those prayers which are offered for the members of the Church.”
- taken from Sanborn