116 And so although all are raised again in a moment, yet all are raised in the order of their merits. And therefore they rise first, who yielding early to the impulses of devotion, and as it were going forth before the rising dawn of faith, received the rays of the eternal Sun. This one may rightly say either of the patriarchs in the course of the Old Testament, or of the apostles under the Gospel. And the second are they who, forsaking the rites of the Gentiles, passed from unholy error under the training of the Church.
So, then, those first were of the fathers, those second of the Gentiles, for the light of faith took its beginning from those, among these it will remain to the end of the world. In the third place and in the fourth, those are raised who are in the south and in the north. The earth is divided into these four, of these four is the year made up, in these four is the earth completed, and from these four is the Church collected. For all who are considered to be joined to holy Church, by being called by the Divine Name, shall obtain the privilege of the resurrection and the grace of eternal bliss, for “they shall come from the east and west, and from the north and south, and shall sit down in the kingdom of God.”
Source: On the Death of Satyrus (New Advent)