Catholic Epistle

From the Catholic Encyclopedia

The name given to the Epistle of St. James, to that of St. Jude, to two Epistles of St. Peter and the first three of St. John, because, unlike the Epistles of St. Paul, they were addressed not to any particular person or church, but to the faithful generally after the manner of an Encyclical letter. Though addressed to particular persons the other two Epistles of St. John are also styled Catholic, because they have always been grouped with the epistles bearing that name.