ewtn.com/library/ISSUES/ORDIN.TXT
THE FOUR TESTS OF INFALLIBILITY
There are, clearly, four tests of infallibility: The Pope must be
(1) intending to teach (2) by virtue of his supreme apostolic authority (3) a matter of Faith or morals (4) to be held by the universal Church.
Here are a few quotes that meet the above 4 tests of infallibility:
• “There is but one universal Church of the faithful, outside which no one at all is saved.” (Pope Innocent III, Fourth Lateran Council, 1215.)
• “We declare, say, define, and pronounce that it is absolutely necessary for the salvation of every human creature to be subject to the Roman Pontiff.” (Pope Boniface VIII, the Bull Unam Sanctam, 1302.)
• “The most Holy Roman Church firmly believes, professes and preaches that none of those existing outside the Catholic Church,
not only pagans, but also Jews and heretics and schismatics, can have a share in life eternal; but that they will go into the eternal fire which was prepared for the devil and his angels,
unless before death they are joined with Her; and that so important is the unity of this ecclesiastical body that only those remaining within this unity can profit by the sacraments of the Church unto salvation, and they alone can receive an eternal recompense for their fasts, their almsgivings, their other works of Christian piety and the duties of a Christian soldier. No one, let his almsgiving be as great as it may, no one, even if he pour out his blood for the Name of Christ, can be saved, unless he remain within the bosom and the unity of the Catholic Church.” (Pope Eugene IV, the Bull Cantate Domino, 1441.)
• Benedict XV, Ad Beatissimi Apostolorum (#24), Nov. 1, 1914: “Such is the nature of Catholicism that it does not admit of more or less, but must be held as a whole or as a whole rejected: ‘This is the Catholic faith, which **unless a man believe faithfully and firmly, he cannot be saved’ **(Athanas. Creed).”