Whether it is part of a deacon's duty to baptize?
Objection 1: It seems that it is part of a deacon's duty to baptize. Because the duties of preaching and of baptizing were enjoined by our Lord at the same time, according to Mat. 28:19: "Going . . . teach ye all nations, baptizing them," etc. But it is part of a deacon's duty to preach the gospel. Therefore it seems that it is also part of a deacon's duty to baptize.
Objection 2: Further, according to Dionysius (Eccl. Hier. v) to "cleanse" is part of the deacon's duty. But cleansing from sins is effected specially by Baptism, according to Eph. 5:26: "Cleansing it by the laver of water in the word of life." Therefore it seems that it belongs to a deacon to baptize.
Objection 3: Further, it is told of Blessed Laurence, who was a deacon, that he baptized many. Therefore it seems that it belongs to deacons to baptize.
On the contrary, Pope Gelasius I says (the passage is to be found in the Decrees, dist. 93): "We order the deacons to keep within their own province"; and further on: "Without bishop or priest they must not dare to baptize, except in cases of extreme urgency, when the aforesaid are a long way off."
I answer that, Just as the properties and duties of the heavenly orders are gathered from their names, as Dionysius says (Coel. Hier. vi), so can we gather, from the names of the ecclesiastical orders, what belongs to each order. Now "deacons" are so called from being "ministers"; because, to wit, it is not in the deacon's province to be the chief and official celebrant in conferring a sacrament, but to minister to others, his elders, in the sacramental dispensations. And so it does not belong to a deacon to confer the sacrament of Baptism officially as it were; but to assist and serve his elders in the bestowal of this and other sacraments. Hence Isidore says (Epist. ad Ludifred.): "It is a deacon's duty to assist and serve the priests, in all the rites of Christ's sacraments, viz. those of Baptism, of the Chrism, of the Paten and Chalice."
Reply to Objection 1: It is the deacon's duty to read the Gospel in church, and to preach it as one catechizing; hence Dionysius says (Eccl. Hier. v) that a deacon's office involves power over the unclean among whom he includes the catechumens. But to teach, i.e. to expound the Gospel, is the proper office of a bishop, whose action is "to perfect," as Dionysius teaches (Eccl. Hier. v); and "to perfect" is the same as "to teach." Consequently, it does not follow that the office of baptizing belongs to deacons.
Reply to Objection 2: As Dionysius says (Eccl. Hier. ii), Baptism has a power not only of "cleansing" but also of "enlightening." Consequently, it is outside the province of the deacon whose duty it is to cleanse only: viz. either by driving away the unclean, or by preparing them for the reception of a sacrament.
Reply to Objection 3: Because Baptism is a necessary sacrament, deacons are allowed to baptize in cases of urgency when their elders are not at hand; as appears from the authority of Gelasius quoted above. And it was thus that Blessed Laurence, being but a deacon, baptized.
III · Q. 67, Art. 2: Whether to baptize is part of the priestly office, or proper to that of bishops?
Whether to baptize is part of the priestly office, or proper to that of bishops?
Objection 1: It seems that to baptize is not part of the priestly office, but proper to that of bishops. Because, as stated above (A 1, OBJ), the duties of teaching and baptizing are enjoined in the same precept (Mat. 28:19). But to teach, which is "to perfect," belongs to the office of bishop, as Dionysius declares (Eccl. Hier. v, vi). Therefore to baptize also belongs to the episcopal office.
Objection 2: Further, by Baptism a man is admitted to the body of the Christian people: and to do this seems consistent with no other than the princely office. Now the bishops hold the position of princes in the Church, as the gloss observes on Lk. 10:1: indeed, they even take the place of the apostles, of whom it is written (Ps. 44:17): "Thou shalt make them princes over all the earth." Therefore it seems that to baptize belongs exclusively to the office of bishops.
Objection 3: Further, Isidore says (Epist. ad Ludifred.) that "it belongs to the bishop to consecrate churches, to anoint altars, to consecrate [conficere] the chrism; he it is that confers the ecclesiastical orders, and blesses the consecrated virgins." But the sacrament of Baptism is greater than all these. Therefore much more reason is there why to baptize should belong exclusively to the episcopal office.
On the contrary, Isidore says (De Officiis. ii): "It is certain that Baptism was entrusted to priests alone."
I answer that, Priests are consecrated for the purpose of celebrating the sacrament of Christ's Body, as stated above (Q 65, A 3). Now that is the sacrament of ecclesiastical unity, according to the Apostle (1 Cor. 10:17): "We, being many, are one bread, one body, all that partake of one bread and one chalice." Moreover, by Baptism a man becomes a participator in ecclesiastical unity, wherefore also he receives the right to approach our Lord's Table. Consequently, just as it belongs to a priest to consecrate the Eucharist, which is the principal purpose of the priesthood, so it is the proper office of a priest to baptize: since it seems to belong to one and the same, to produce the whole and to dispose the part in the whole.
Reply to Objection 1: Our Lord enjoined on the apostles, whose place is taken by the bishops, both duties, namely, of teaching and of baptizing, but in different ways. Because Christ committed to them the duty of teaching, that they might exercise it themselves as being the most important duty of all: wherefore the apostles themselves said (Acts 6:2): "It is not reason that we should leave the word of God and serve tables." On the other hand, He entrusted the apostles with the office of baptizing, to be exercised vicariously; wherefore the Apostle says (1 Cor. 1:17): "Christ sent me not to baptize, but to preach the Gospel." And the reason for this was that the merit and wisdom of the minister have no bearing on the baptismal effect, as they have in teaching, as may be seen from what we have stated above (Q 64, A 1, ad 2; AA 5,9). A proof of this is found also in the fact that our Lord Himself did not baptize, but His disciples, as John relates (4:2). Nor does it follow from this that bishops cannot baptize; since what a lower power can do, that can also a higher power. Wherefore also the Apostle says (1 Cor. 1:14, 16) that he had baptized some.
Reply to Objection 2: In every commonwealth minor affairs are entrusted to lower officials, while greater affairs are restricted to higher officials; according to Ex. 18:22: "When any great matter soever shall fall out, let them refer it to thee, and let them judge the lesser matters only." Consequently it belongs to the lower officials of the state to decide matters concerning the lower orders; while to the highest it belongs to set in order those matters that regard the higher orders of the state. Now by Baptism a man attains only to the lowest rank among the Christian people: and consequently it belongs to the lesser officials of the Church
to baptize, namely, the priests, who hold the place of the seventy-two disciples of Christ, as the gloss says in the passage quoted from Luke 10.
Reply to Objection 3: As stated above (Q 65, A 3), the sacrament of Baptism holds the first place in the order of necessity; but in the order of perfection there are other greater sacraments which are reserved to bishops.