Treatise — Sabetti-Barrett, Compendium of Moral TheologyTreatise XVII. On Order¶1.Order from the institution of Christ distinguishes clerics from laymen in the Church for the rule of the faithful and the ministry of divine worship (Can. 948).The Existence of the Sacrament of OrderWithin this treatiseChapter I. On the Nature and Division of the Sacrament of Ordern. 829Chapter II. On the Matter and Form of the Sacrament of Ordernn. 830–831Chapter III. On the Minister of the Sacrament of Ordernn. 832–833Chapter IV. On the Subject of the Sacrament of Ordernn. 834–835← Chapter V. On the Subject of Extreme UnctionChapter I. On the Nature and Division of the Sacrament of Order →