“[S]ince We hold upon this earth the place of God Almighty, Who will have all men to be saved and to come to the knowledge of the Truth, … We direct Our first thoughts to those most unfortunate of all nations who have never received the light of the Gospel, or who, after having possessed it, have lost it through neglect or the vicissitudes of time: Hence do they ignore God, and live in the depths of error. Now, as all salvation comes from Jesus Christ–for there is no other Name under Heaven given to men whereby we must be saved–Our ardent desire is that the most Holy Name of Jesus should rapidly pervade and fill every land.
“And here, indeed, is a duty which the Church, faithful to the Divine Mission entrusted to her, has never neglected. What has been the object of her labors for more than nineteen centuries? Is there any other work she has undertaken with greater zeal and constancy than that of bringing the nations of the earth to the Truth and Principles of Christianity?“
— Pope Leo XIII, Praeclara Gratulationis Publicae (1894)