Part — Sabetti-Barrett, Compendium of Moral Theology
Part II. On the Particular Obligations of Clerics
§ 1. Those who have been devoted to the divine ministries by at least the first tonsure are called clerics.
§ 2. Not all are in the same grade, but among them there is a sacred hierarchy in which some are subordinated to others.
§ 3. By divine institution the sacred hierarchy, by reason of order, consists of Bishops, priests, and ministers; by reason of jurisdiction, of the supreme pontificate and the subordinate episcopate; but by the institution of the Church other grades also have been added (Can. 108).
§ 1. Every cleric must be ascribed either to some diocese or to some religion, so that wandering clerics are in no way admitted (Can. 111). Clerics alone can obtain the power either of order or of ecclesiastical jurisdiction, and ecclesiastical benefices and pensions (Can. 118).