78 To you, Venerable Brethren, who have the pastoral care of those regions where the Gospel seed has only lately been sown and who are founding or consolidating new ecclesiastical jurisdictions, We desire that this letter should be not only a pledge of Our fatherly solicitude, but an evidence as well that the entire Church of Jesus Christ is awake to the extent and the difficulty of your task and is with you to the uttermost in order to aid your work with prayers, with material help, and with the service of her noblest sons. What difference does it make that you are separated from the center of Catholicism by enormous distances? Are not those sons of the Church whose courage is outstanding and whose endurance is taxed to the utmost dearer to her heart?
Source: Fidei Donum (Vatican.va)