Roman Catechism 21.16

Chapter 21 — Part II: The Sacraments — Holy Orders

Section 16. The Twofold Power Conferred by this Sacrament — Having explained all this, the pastor should now turn his attention to the special properties of this Sacrament, so that the faithful who desire to enter into the ecclesiastical state may understand the nature of the office to which they are called and the extent of the power bestowed by God on the Church and her ministers.