23 If it is true, as We said, that in order for the apostolate to bear abundant fruits, the most important requirement the native priests must meet is that they should know, and carefully evaluate, everything connected with the institutions peculiar to their countries, what Our predecessor said of the whole world will remain even truer: "the prospects and plans of the Church, which embrace the whole world, will be the prospects and plans of their daily Christian lives." (43) To this end, the native clergy not only will be bound to know the affairs and developments of the universal Church, but must also be guided by, and filled with, that charity which embraces all the faithful. This is the reason why St. John Chrysostom said of Christian liturgical celebrations: "When we approach the altar, we pray, above all, for the whole universe and the common good"; (44) and St. Augustine uttered a beautiful sentence: "Extend your charity to the whole world, if you want to love Christ, because the members of Christ's body cover the whole world." (45)
Source: Princeps Pastorum (Vatican.va)