From a meditation for Pentecost Wednesday in The Liturgical Year, by Dom Prosper Guéranger, tr. Dom Laurence Shepherd OSB (Fitzwilliam, N.H.: Loreto, 2000):
It was necessary that this Church should last for all ages, and that she should traverse the earth in such wise that her name and mission might be known to all nations; in a word, she was to be Catholic, that is, universal, taking in all times and all places. Accordingly, the Holy Ghost made her Catholic. He began by showing her, on the day of Pentecost, to the Jews who had flocked to Jerusalem from the various nations; and when these returned to their respective countries, they took the good tidings with them. He then sent the apostles and disciples into the whole world; and we learn from the writers of those early times, that a century had scarcely elapsed before there were Christians in every portion of the known earth. Since then, the visibility of this holy Church has gone on increasing gradually more and more. If the divine Spirit, in the designs of His justice, permitted her to lose her influence in a nation that had made itself unworthy of the grace, He transferred her to another where she would be obeyed. If, at times, there have been whole countries where she had no footing, it was either because she had previously offered herself to them and they had rejected her, or because the time marked by Providence for her reigning there had not yet come. The history of the Church’s propagation is one long proof of her perpetuity, and of her frequent migrations. Times and places, all are hers; if there be one wherein she is not acknowledged as supreme, she is at least represented by her members; and this prerogative, which has given her the name of Catholic, is one of the grandest of the workings of the Holy Ghost.