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197 But there is something else of even greater importance, Venerable Brethren, which We commend to your apostolic zeal, in a very special manner. Whatever pertains to the external worship has assuredly its importance; however, the most pressing duty of Christians is to live the liturgical life, and increase and cherish its supernatural spirit.
198 Readily provide the young clerical student with facilities to understand the sacred ceremonies, to appreciate their majesty and beauty and to learn the rubrics with care, just as you do when he is trained in ascetics, in dogma and in a canon law and pastoral theology. This should not be done merely for cultural reasons and to fit the student to perform religious rites in the future, correctly and with due dignity, but especially to lead him into closest union with Christ, the Priest, so that he may become a holy minister of sanctity.
199 Try in every way, with the means and helps that your prudence deems best, that the clergy and people become one in mind and heart, and that the Christian people take such an active part in the liturgy that it becomes a truly sacred action of due worship tO the eternal Lord in which the priest, chiefly responsible for the souls of his parish, and the ordinary faithful are united together.
200 To attain this purpose, it will greatly help to select carefully good and upright young boys from all classes of citizens who will come generously and spontaneously to serve at the altar with careful zeal and exactness. Parents of higher social standing and culture should greatly esteem this office for their children. If these youths, under the watchful guidance of the priests, are properly trained and encouraged to fulfill the task committed to them punctually, reverently and constantly, then from their number will readily come fresh candidates for the priesthood. The clergy will not then complain--as, alas, sometimes happens even in Catholic places--that in the celebration of the august sacrifice they find no one to answer or serve them.
201 Above all, try with your constant zeal to have all the faithful attend the eucharistic sacrifice from which they may obtain abundant and salutary fruit; and carefully instruct them in all the legitimate ways we have described above so that they may devoutly participate in it. The Mass is the chief act of divine worship; it should also be the source and center of Christian piety. Never think that you have satisfied your apostolic zeal until you see your faithful approach in great numbers the celestial banquet which is a sacrament of devotion, a sign of unity and a bond of love (180) .
180. Cf. Saint Augustine, Tract. 26 in John 13.
202 By means of suitable sermons and particularly by periodic conferences and lectures, by special study weeks and the like, teach the Christian people carefully about the treasures of piety contained in the sacred liturgy so that they may be able to profit more abundantly by these supernatural gifts. In this matter, those who are active in the ranks of Catholic Action will certainly be a help to you, since they are ever at the service of the hierarchy in the work of promoting the kingdom of Jesus Christ.
203 But in all these matters, it is essential that you watch vigilantly lest the enemy come into the field of the Lord and sow cockle among the wheat; (Cf. Mt 13,24-25) in other words, do not let your flocks be deceived by the subtle and dangerous errors of false mysticism or quietism--as you know We have already condemned these errors; (182) also do not let a certain dangerous "humanism" lead them astray, nor let there be introduced a false doctrine destroying the notion of Catholic faith, nor finally an exaggerated zeal for antiquity in matters liturgical. Watch with like diligence lest the false teaching of those be propagated who wrongly think and teach that the glorified human nature of Christ really and continually dwells in the "just" by His presence and that one and numerically the same grace, as they say, unites Christ with the members of His Mystical Body.
182. Encyclical letter Mystici Corporis.
204 Never be discouraged by the difficulties that arise, and never let your pastoral zeal grow cold. "Blow the trumpet in Sion ... call an assembly, gather together the people, sanctify the Church, assemble the ancients, gather together the little ones, and them that suck at the breasts," (Jl 2,15-16) and use every help to get the faithful everywhere to fill the churches and crowd around the altars so that they may be restored by the graces of the sacraments and joined as living members to their divine Head, and with Him and through Him celebrate together the august sacrifice that gives due tribute of praise to the Eternal Father.
205 These, Venerable Brethren, are the subjects We desired to write to you about. We are moved to write that your children, who are also Ours, may more fully understand and appreciate the most precious treasures which are contained in the sacred liturgy: namely, the eucharistic sacrifice, representing and renewing the sacrifice of the cross, the sacraments which are the streams of divine grace and of divine life, and the hymn of praise, which heaven and earth daily offer to God.
206 We cherish the hope that these Our exhortations will not only arouse the sluggish and recalcitrant to a deeper and more correct study of the liturgy, but also instill into their daily lives its supernatural spirit according to the words of the Apostle, "extinguish not the spirit" (1Th 5,19) .
207 To those whom an excessive zeal occasionally led to say and do certain things which saddened Us and which We could not approve, we repeat the warning of St. Paul, "But prove all things, hold fast that which is good" (lbid., 1Th 5,21) . Let Us paternally warn them to imitate in their thoughts and actions the Christian doctrine which is in harmony with the precepts of the immaculate Spouse of Jesus Christ, the mother of saints.
208 Let Us remind all that they must generously and faithfully obey their holy pastors who possess the right and duty of regulating the whole life, especially the spiritual life, of the Church. "Obey your prelates and be subject to them. For they watch as being to render an account of your souls; that they may do this with joy and not with grief" (He 13,7) .
209 May God, whom we worship, and who is "not the God of dissension but of peace," (1Co 14,33) graciously grant to us all that during our earthly exile we may with one mind and one heart participate in the sacred liturgy which is, as it were, a preparation and a token of that heavenly liturgy in which we hope one day to sing together with the most glorious Mother of God and our most loving Mother, "To Him that sitteth on the throne, and to the Lamb, benediction and honor, and glory and power for ever and ever" (Ap 5,13) .
210 In this joyous hope, We most lovingly impart to each and every one of you, Venerable Brethren, and to the flocks confided to your care, as a pledge of divine gifts and as a witness of Our special love, the apostolic benediction.
211 Given at Castel Gandolfo, near Rome, on the 20th day of November in the year 1947, the 9th of Our Pontificate.
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