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“§ 712 It [the Holy Catholic Church] firmly believes, professes, and teaches that the matter pertaining to the law of the Old Testament, of the Mosaic law, which are divided into ceremonies, sacred rites, sacrifices, and sacraments, because they were established to signify something in the future, although they were suited to Divine worship at that time, after our Lord’s coming had been signified by them, ceased, and the Sacraments of the New Testament began; and that whoever, even after the passion, placed hope in these matters of law and submitted himself to them as necessary for salvation, as if faith in Christ could not save without them, sinned mortally. Yet it does not deny that after the passion of Christ up to the promulgation of the Gospel they could have been observed until they were believed to be in no way necessary for salvation; but after the promulgation of the Gospel it asserts they cannot be observed without the loss of eternal salvation. All, therefore, who after that time observe circumcision and the Sabbath and the other requirements of the law, it declares alien to the Christian faith and not in the least fit to participate in eternal salvation, unless someday they recover from these errors….

“§714 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 ever be partakers of eternal life, but that they are to go into the eternal fire ‘which was prepared for the devil, and his angels,’ (Matthew 25:41) 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 from the sacraments of the Church unto salvation, and that they alone can receive an eternal recompense for their fasts, alms deeds, and other works of Christian piety and 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 they abide within the bosom and unity of the Catholic Church.”

Cantate Domino, from the infallible ecumenical Council of Florence under His Holiness Pope Eugene IV defining the Solemn Doctrine: Extra Ecclesiam Nulla Salus (“Outside the Church, there is no salvation.”), promulgated by papal bull, February 4, 1444 [Florentine calendar] in Denziger, Enchiridion Symbolorum, The Sources of Catholic Dogma, § 712-714