Thus again the Vatican Council defines clearly: “To enable us to do our duty in embracing the true faith and remaining in it steadfastly, God has through His incarnate Son established the Church and set plain marks upon His institution, in order that it may be recognized by all as the guardian and interpreter of revelation. For only the Catholic Church possesses all those arrangements, so various and wonderful, made by God in order to demonstrate publicly the credibility of Christianity. Indeed the Church of itself, because of its wonderful propagation, its pre-eminent sanctity and inexhaustible fecundity in everything good, its Catholic unity and invincible duration, is a grand permanent proof of its credibility and irrefutable testimony in behalf of its divine mission. Thus, like a ’standard unto the nations,’ it invites those to come to it who have not yet believed, and assures its children that the faith they profess rests upon a most firm foundation.” The Catholic looks with pride upon his Church: she has stood all the trials of history. He sees her endure, though within harassed by heresies and endangered by various unworthiness and incapacity of her priests, and attacked incessantly from without by irreconcilable enemies, yet prevailing victoriously through the centuries, blessing, converting nations and beloved by them; while by her side worldly kingdoms, supported by armies and weapons, go down into the grave of human instability. The most wonderful fact in the world’s history, contrary to all laws of natural, historical events,—here a higher hand is plainly thrust into human history; it is the fulfilment of the divine promise: “I am with you all days, even to the consummation of the world.” “The gates of hell shall not prevail against it.” He sees the Saints, who have lived in this Church and have become saints through her, those superhuman heroes of virtue, who far surpass the laws of human capacity.