Catechism of the Council of Trent: Holy Orders
Names of this Sacrament
Hence to exercise this power certain ministers are appointed and solemnly consecrated, which consecration is called the Sacrament of Orders, or Sacred Ordination. The Fathers used this word, which in itself has a most extensive signification, to show the dignity and excellence of God's ministers.
In fact, order, when understood in its strict meaning and acceptation, is the arrangement of superior and inferior things so disposed as to stand in mutual relation towards each other. Now as in this ministry there are many grades and various functions, and as all these are disposed and arranged according to a definite plan, the name Order has been well and properly applied to it.
Holy Orders Is a Sacrament
That Sacred Ordination is to be numbered among the Sacraments of the Church, the Council of Trent has established by the same line of reasoning as we have already used several times. Since a Sacrament is a sign of a sacred thing, and since the outward action in this consecration denotes the grace and power bestowed on him who is consecrated, it becomes clearly evident that Order must be truly and properly regarded as a Sacrament. Thus the Bishop, handing to him who is being ordained a chalice with wine and water, and a paten with bread, says: Receive the power of offering sacrifice, etc. In these words, pronounced along with the application of the matter, the Church has always taught that the power of consecrating the Eucharist is conferred, and that a character is impressed on the soul which brings with it grace necessary for the due and proper discharge of that office, as the Apostle declares thus: I admonish thee that thou stir up the grace of God which is in thee, by the imposition of my hands; for God hath not given us the spirit of fear, but of power, and of love, and of sobriety.
Number of Orders
Now, to use the words of the holy Council: The ministry of so sublime a priesthood being a thing all divine, it is but befitting its worthier and more reverent exercise that in the Church's well-ordered disposition there should be several different orders of ministers destined to assist the priesthood by virtue of their office—orders arranged in such a way that those who have already received clerical tonsure should be raised, step by step, from the lower to the higher orders.
It should be taught, therefore, that these orders are seven in number, and that this has been the constant teaching of the Catholic Church. These orders are those of porter, lector, exorcist, acolyte, subdeacon, deacon and priest.
That the number of ministers was wisely established thus may be proved by considering the various offices that are necessary for the celebration of the Holy Sacrifice of the Mass and the consecration and administration of the Blessed Eucharist, this being the principal scope of their institution.
They are divided into major or sacred, and minor orders. The major or sacred orders are priesthood, deaconship and subdeaconship; while the minor orders are those of acolyte, exorcist, lector and porter, concerning each of which we shall now say a few words so that the pastor may be able to explain them to those especially whom he knows to be about to receive any of the orders in question.
Tonsure
In the beginning should be explained first tonsure, and it should be shown that this is a sort of preparation for the reception of orders. As men are prepared for Baptism by exorcisms and for Matrimony by engagement, so to those who dedicate themselves to God by tonsure the way is opened that leads to the Sacrament of Orders; for by the cutting off of hair is signified the character and disposition of him who desires to devote himself to the sacred ministry.
The Name "Cleric"
Regarding the name cleric, which is then given him for the first time, it is derived from the fact that he thereby begins to take the Lord for his lot and inheritance, just as those, who among the Jews were attached to the service of God, were forbidden by the Lord to have any part of the ground that would be distributed in the land of promise: I, he said, am thy portion and inheritance. And although these words are true of all the faithful, yet it is certain that they apply in a special way to those who consecrate themselves to the service of God.
Origin And Meaning Of Tonsure
The hair of the head is cut off in the form of a crown. It should be always worn thus, and should be enlarged according as one is advanced to higher orders.
The Church teaches that this usage is derived from Apostolic origin, as mention is made of it by the most ancient and authoritative Fathers, such as St. Denis the Areopagite, St. Augustine and St. Jerome.
It is said that the Prince of the Apostles first introduced this usage in memory of the crown of thorns which was put upon our Saviour's head, so that the devices resorted to by the impious for the ignominy and torture of Christ might be used by His Apostles as a sign of honour and glory, as well as to signify that the ministers of the Church should strive to resemble Christ our Lord and represent Him in all things.
Some, however, assert that by tonsure is denoted the royal dignity, that is, the portion reserved especially for those who are called to the inheritance of the Lord. It will readily be seen that what the Apostle Peter says of all the faithful: You are a chosen generation, a kingly priesthood, a holy nation, applies especially and with much greater reason to the ministers of the Church.
Still there are some who consider that by the circle, which is the most perfect of all figures, is signified the profession of a more perfect life undertaken by ecclesiastics; while in view of the fact that the hair of their heads, which is a kind of bodily superfluity, is cut off, others think that it denotes contempt for external things, and detachment of soul from all human cares.
The Minor Orders
Porter
After tonsure it is customary to advance to the first order, which is that of porter. The function (of porter) is to guard the keys and doors of the church, and to allow no one to enter there to whom access has been forbidden. Formerly the porter used to assist at the Holy Sacrifice of the Mass, to see that no one approached too near the altar, or disturbed the priest during the celebration of the divine mysteries. Other duties were also assigned to him, as may be seen from the ceremonies used at his ordination.
Thus the Bishop, taking the keys from the altar, hands them to him who is being made porter, and says: Let your conduct be that of one who has to render to God an account of those things that are kept under these keys.
How great was the dignity of this order in the ancient Church may be inferred from a usage which exists in the Church in these times. For the office of treasurer, which is still numbered among the more honourable functions of the Church, was entrusted to porters, and carried with it also the guardianship of the sacristy.
Reader
The second degree of orders is the office of reader, whose duty it is to read in the church in a clear and distinct voice the books of the Old and of the New Testament, and especially those which are read during the nocturnal psalmody. Formerly it was also his duty to teach the faithful the first rudiments of the Christian religion.
Hence it is that when ordaining him, the Bishop, in the presence of the people, handing him a book in which are set down all that regards this office, says: Take, and be you an announcer of the word of God; if you faithfully and profitably discharge your office, you shall have a part with those who from the beginning have well ministered the word of God.
Exorcist
The third order is that of exorcists, to whom is given the power to invoke the name of the Lord over those who are possessed by unclean spirits. Hence the Bishop when ordaining them presents to them a book in which the exorcisms are contained, and at the same time pronounces this form of words: Take, and commit to memory, and have the power of imposing hands over the possessed, whether baptised or catechumen.
Acolyte
The fourth degree is that of acolytes, and it is the last of the orders that are called minor and not sacred. Their duty is to attend and serve the ministers who are in major orders, that is, the deacon and subdeacon, in the Sacrifice of the altar. They also carry and attend to the lights during the celebration of the Sacrifice of the Mass, and especially during the reading of the Gospel, from which fact they are also called candle-bearers.
Therefore at the ordination of acolytes the Bishop observes the following rite: First of all he carefully warns them of the nature of their office; then hands to each of them a light, saying: Receive this candlestick and candle, and remember that henceforth you are given the charge of lighting the candles of the church, in the name of the Lord. Then he hands them empty cruets in which are presented the wine and water for the Sacrifice, saying: Receive these cruets to supply wine and water for the Eucharist of Christ's blood, in the name of the Lord.