15 Certainly, Venerable Brethren, when one views the faith which distinguishes the Church, the sacraments which nourish and perfect her, the universal laws and precepts which govern her, the unfailing glory that is hers by reason of the heroic virtue and constancy of so many of her elect, there can be no doubt that the Bride of Christ, so dear to her divine Redeemer, has always kept herself holy and unsullied.
Source: Paenitentiam Agere (Vatican.va)