The Children of the Catholic Church ought to adhere to the Faith of their Fathers and die for it.
[86.] Whoever then gainsays these Apostolic and Catholic determinations, first of all necessarily insults the memory of holy Celestine, who decreed that novelty should cease to assail antiquity; and in the next place sets at naught the decision of holy Sixtus, whose sentence was, “Let no license be allowed to novelty, since it is not fit that any addition be made to antiquity;” moreover, he condemns the determination of blessed Cyril, who extolled with high praise the zeal of the venerable Capreolus, in that he would fain have the ancient doctrines of the faith confirmed, and novel inventions condemned; yet more, he tramples upon the Council of Ephesus, that is, on the decisions of the holy bishops of almost the whole East, who decreed, under divine guidance, that nothing ought to be believed by posterity save what the sacred antiquity of the holy Fathers, consentient in Christ, had held, who with one voice, and with loud acclaim, testified that these were the words of all, this was the wish of all, this was the sentence of all, that as almost all heretics before Nestorius, despising antiquity and upholding novelty, had been condemned, so Nestorius, the author of novelty and the assailant of antiquity, should be condemned also. Whose consentient determination, inspired by the gift of sacred and celestial grace, whoever disapproves must needs hold the profaneness of Nestorius to have been condemned unjustly; finally, he despises as vile and worthless the whole Church of Christ, and its doctors, apostles, and prophets, and especially the blessed Apostle Paul: he despises the Church, in that she hath never failed in loyalty to the duty of cherishing and preserving the faith once for all delivered to her; he despises St. Paul, who wrote, “O Timothy, guard the deposit intrusted to thee, shunning profane novelties of words;” 524 and again, “if any man preach unto you other than ye have received, let him be accursed.” 525 But if neither apostolical injunctions nor ecclesiastical decrees may be violated, by which, in accordance with the sacred consent of universality and antiquity, all heretics always, and, last of all, Pelagius, Cœlestius, and Nestorius have been rightly and deservedly condemned, then assuredly it is incumbent on all Catholics who are anxious to approve themselves genuine sons of Mother Church, to adhere henceforward to the holy faith of the holy Fathers, to be wedded to it, to die in it; but as to the profane novelties of profane men—to detest them, abhor them, oppose them, give them no quarter.
[87.] These matters, handled more at large in the two preceding Commonitories, I have now put together more briefly by way of recapitulation, in order that my memory, to aid which I composed them, may, on the one hand, be refreshed by frequent reference, and, on the other, may avoid being wearied by prolixity.