Section — McHugh–Callan, Moral Theology
Vocation
Vocation to the Clerical State
Vocation to the Clerical State.—(a) Internal Vocation.—No one should enter the religious or clerical state unless called thereto by God (John, xv. 16; Acts, xiii. 2; Heb., v. 4, 5; I Cor., xii. 4 sqq.). The foundation of the entire religious, priestly and apostolic life, namely divine vocation, consists of two essential elements, the one divine, the other ecclesiastical. As to the first element, God’s call to embrace the priestly or religious life must be considered so necessary that in its absence the foundation upon which the whole structure is to rest is absent (Pius XII, Sedes Sapientiae). The signs of a divine call do not necessarily or even ordinarily include a feeling of inspiration or invitation from the Holy Spirit, but it suffices that one may have a liking, a right intention, and fitness (physical, mental, moral) for the life; for, where God gives a call, He gives the means to fulfill the duties. Thus, those who will not be able to say Mass, or who cannot master Latin or theology, or who cannot observe celibacy, or who are vicious (e.g., mischief-makers, drunkards) or unspiritual (e.g., the lazy, those who dislike exercises of piety), do not show the signs of a priestly vocation.
(b) External Vocation.—No one should be admitted to the religious life or to Orders unless he has given sufficient signs of a call from God. Thus, a Bishop would sin most gravely and be a sharer in the sins of others if he conferred Major Orders on anyone about whose unworthiness he was morally certain on positive grounds (Canon 973); nor may a Religious Superior receive to profession any novice about whom he is doubtful (Canon 571). Scarcity of vocations is no excuse for laxity, since it is better to have a few creditable clerics than a multitude of unworthy ones (Benedict XIV). What St. Paul said of deacons (“Let these first be proved, and so let them minister, having no crime,” I Tim., iii. 10), is therefore to be applied to all candidates for the clerical life. A vocation is tested by the years of probation which the church law provides for seminarians, novices and other aspirants to the ecclesiastical state. No cleric has a right to ordination before he receives the free call from a bishop, but on the other hand it is criminal to prevent a suitable candidate from embracing the clerical state (Canon 971). “By a divine vocation to the religious and clerical state a person undertakes publicly to lead a life of holiness in the Church, a visible and hierarchical society, and to exercise this hierarchical ministry. Such a person, therefore, ought to be authoritatively tested, approved and directed by the hierarchical rulers to whom God has entrusted the administration of the Church” (Pius XII, Sedes Sapientiae).
Sinfulness of Disregarding Vocation
Sinfulness of Disregarding Vocation.—(a) He who enters the clerical state, not knowing that he has a vocation, is guilty of sin, as is clear from the previous paragraph. According to some, anyone who receives Major Orders, even with serious doubt about his vocation, commits a mortal sin, since he inflicts a serious injury on the rights of God, the Church, himself and his neighbor. According to others, the sin is only venial when one enters the clerical state conscious of the absence of vocation, but determined with the help of God to live up to all the duties; for, though the act is rash, there is good will and good intention, and grace will not be wanting.
(b) He who refuses to enter the clerical state, though knowing for certain that he has a vocation, is also guilty of sin, for only negligence or improper motives such as laziness, sensuality, or too great love of liberty can produce such reluctance. The sin is grave or light according to the circumstances. There is grave sin, if the resistance to the call constitutes serious disobedience, pride or uncharitableness (e.g., if there were a great scarcity of priests and the bishop commanded a worthy layman to take Orders); there is venial sin in other cases when the rejection is only dissent to an invitation and exposes neither self nor other to grave peril of losing salvation. Finally, if the signs of vocation do not produce certainty, there may be no sin at all, but rather virtue, in refusal to ascend to the clerical state, for no one is bound to take up grave obligations when uncertain of his duties, and many holy persons from humility or fear of unworthiness have decided, against the advice or invitation of others, not to become clerics.