Sacerdotalis Caelibatus §62

⁶² The priesthood is a ministry instituted by Christ for the service of His Mystical Body which is the Church. To her belongs the authority to admit to that priesthood those whom she judges qualified—that is, those to whom God has given, along with other signs of an ecclesiastical vocation, the gift of a consecrated celibacy. (116) In virtue of such a gift, confirmed by canon law, the individual is called to respond with free judgment and total dedication, adapting his own mind and outlook to the will of God who calls him. Concretely, this divine calling manifests itself in a given individual with his own definite personality structure which is not at all overpowered by grace. In candidates for the priesthood, therefore, the sense of receiving this divine gift should be cultivated; so too, a sense of responsibility in their meeting with God, with the highest importance given to supernatural means.