The Chrism Mass

Before history and theology, we must establish exactly what this celebration is: its day, its place, its unique character, and the reason for its name. Many of the faithful confuse it with the evening Mass of Holy Thursday; yet they are two quite distinct celebrations.

A single Mass for the whole diocese

The Chrism Mass is not one parish Mass among others. It is, by nature, diocesan: it is celebrated only once in each diocese, because it is bound to the person of the bishop and to the life of the whole diocese. The letter Paschalis Sollemnitatis, which laid down the rules for Holy Week in 1988, is explicit:

"There can be only one celebration of this Mass, given its significance in the life of the diocese, and it is to take place in the cathedral church or, for pastoral reasons, in another church, preferably a notable church." — Congregation for Divine Worship, Paschalis Sollemnitatis, § 36^[1]

The principal celebrant is therefore always the diocesan bishop. He alone can consecrate the chrism; he alone gathers around himself the priests who come from the various regions of the diocese to concelebrate. Where a bishop has several venues at his disposal, it is the uniqueness of the celebration that takes precedence: one altar, one chrism, for the whole local Church.

The day: the morning of Holy Thursday

The Chrism Mass is traditionally celebrated on Holy Thursday morning. This choice is not arbitrary: Holy Thursday is the day on which the Church commemorates the Last Supper, that is, the joint institution of the Eucharist and the priesthood. Blessing the oils on that day roots them in the very source of the sacraments.

But the Church knows pastoral constraints. In a large diocese, gathering all the clergy and the people on a Thursday morning can be difficult. The law therefore provides flexibility:

"Traditionally the Chrism Mass is celebrated on the Thursday of Holy Week. But if on that day the clergy and the people can only with difficulty gather around the bishop, this Mass may be anticipated to another day, one close to Easter." — Congregation for Divine Worship, Paschalis Sollemnitatis, § 35^[2]

In fact, many dioceses celebrate it on another day of Holy Week — often Tuesday or Wednesday of Holy Week — so as to allow wide participation. The essential point remains: the oils must be ready for the Easter night, since "the new chrism and the new oil of catechumens are needed for the celebration of the sacraments of initiation in the paschal night" ^[3].

Its place in Holy Week: the threshold of the Triduum

This is a point often misunderstood. The Chrism Mass does not belong to the Easter Triduum in the strict sense. The Triduum begins only on the evening of Holy Thursday, with the Mass of the Lord's Supper (In Cena Domini), which opens the three holy days until the Easter vespers. The Chrism Mass, celebrated in the morning, is therefore its final prelude: it closes Lent, as it were, and prepares the entry into the decisive days.

This distinction governs everything else. In the evening, at the Mass of the Supper, the washing of the feet and the institution of the Eucharist are read; the altars are stripped; we enter the night of the Passion. In the morning, at the Chrism Mass, there is no weeping yet: the oil is blessed, the joy of the priesthood is sung, and thanks are given for the sacraments. The two celebrations, a few hours apart, together express the richness of Holy Thursday. For an overview of this season, see the liturgical year and the Easter Triduum.

Why "chrismal"? From chrism to the name of Christian

The name of the Mass comes from its central act: the consecration of the chrism. The word deserves attention, for it touches the heart of Christian identity. "Chrism" comes from the Greek khrisma (χρῖσμα), meaning "that which serves to anoint," the anointing. From the same root come Khristos (Χριστός), the "Anointed One" — Christ — and the word khristianos, "Christian," that is, one marked with the anointing of Christ. The Catechism states this clearly:

"The anointing with sacred chrism, perfumed oil consecrated by the bishop, signifies the gift of the Holy Spirit to the newly baptized. He has become a Christian, that is, one 'anointed' by the Holy Spirit, incorporated into Christ, who is anointed priest, prophet, and king." — Catechism of the Catholic Church, § 1241^[4]

Calling this Mass "chrismal" is therefore not naming a ritual detail: it says that it prepares the oil by which men and women become Christians, that is, "anointed ones" in the image of the Anointed One par excellence.

The material heart of the Chrism Mass is three oils. All three are based on olive oil, the biblical sign of strength, joy, and healing; but they differ in composition, blessing, and use. The Latin tradition designates them by abbreviations found engraved on the sacred vessels: OS or OC for the oil of catechumens, OI for the oil of the sick, SC for the holy chrism^[5].

The table below summarizes their differences. Note the fundamental distinction: the first two oils are blessed, while the chrism is consecrated — a more solemn act — and mixed with perfumed balsam.

The oil of catechumens

The oil of catechumens (in Latin Oleum catechumenorum or Oleum sanctorum, hence the abbreviation OS, sometimes written OC) is simply blessed olive oil. It is used to anoint catechumens before baptism and, in the rite for infants, to anoint the breast of the child. Its meaning is strengthening and purification: the Catechism explains that "anointing with the oil of catechumens before Baptism signifies cleansing and strengthening" ^[6]. The ancient tradition saw in it a preparation for spiritual combat — just as the athlete of antiquity rubbed himself with oil before wrestling, the future baptized person is anointed to face and renounce the powers of evil^[7].

The oil of the sick

The oil of the sick (Oleum infirmorum, abbreviation OI) is likewise blessed olive oil. It is the matter of the sacrament of the anointing of the sick, by which the Church entrusts to the suffering and glorified Lord those who are seriously ill, to raise them up and, if need be, to forgive their sins. Its scriptural root is the epistle of Saint James:

"Is anyone among you sick? He should summon the presbyters of the church, and they should pray over him and anoint him with oil in the name of the Lord." — Epistle of Saint James 5:14^[8]

The Catechism sums it up: "the anointing of the sick expresses healing and comfort" ^[9]. It is the only one of the three oils that, in case of necessity, a priest may bless himself at the bedside of the sick person — but the ordinary rule remains blessing by the bishop at the Chrism Mass.

The holy chrism: oil and balsam

The holy chrism (Sacrum chrisma, abbreviation SC) is of another nature. It is not merely blessed but consecrated, and it is composed of olive oil mixed with balsam (or fragrant balm), which gives it its characteristic perfume. The Catholic Encyclopedia defines it as "a mixture of olive oil and balsam, blessed by the bishop in a special manner" ^[10]. It is by far the noblest of the three oils, and the one that gives its name to the whole celebration.

The balsam and the "fragrance of Christ"

Why add balsam to the oil? Tradition reads a rich symbolism in it. Oil, which penetrates and strengthens, represents the abundant grace poured into the soul; balsam, whose fragrance spreads and which preserves from corruption, represents the sweetness of Christian virtue and the incorruptibility of the life of grace^[11]. The chrism thus says, in its very matter, that the Christian is called to spread a sweet fragrance around him:

"By Confirmation Christians […] share more completely in the mission of Jesus Christ and in the fullness of the Holy Spirit with which he is filled, so that their lives may exhale 'the aroma of Christ.'" — Catechism of the Catholic Church, § 1294, citing 2 Cor 2:15^[12]

The uses of the holy chrism

Chrism is the oil of consecrations. It is used whenever someone or some place dedicated to God is to be lastingly marked with the seal of the Spirit. Its uses are many:

• at baptism, for the anointing of the crown of the head of the newly baptized;
• at confirmation, for the anointing of the forehead which imprints the seal of the Holy Spirit;
• at ordination, for the anointing of the priest's hands and the bishop's head^[13];
• at the dedication of churches and altars, as well as for the consecration of chalices, patens, and bells^[14].

The Catechism gathers this threefold sacramental anointing together: "Anointing with holy chrism after Baptism, in Confirmation and in Ordination, is the sign of a consecration" ^[15]. This is why the chrism consecrated at the Chrism Mass is then distributed among all the parishes of the diocese, where it will be kept, with the other two oils, in a worthy place in the sanctuary^[16].

The most solemn moment of the Chrism Mass is the consecration of the chrism, which takes place after Communion (or, in another arrangement, at the end of the Liturgy of the Word). It is an act reserved to the bishop and carries great symbolic weight.

The bishop's gesture

The Catechism places this gesture precisely in liturgical time and in the life of the diocese:

"It is the bishop who, on Holy Thursday, during the Chrism Mass, consecrates the sacred chrism for his whole diocese." — Catechism of the Catholic Church, § 1297^[17]

The bishop first pours the balsam into the oil and mixes the two, then pronounces the prayer of consecration. In the current Latin rite — fixed by the Ordo benedicendi oleum catechumenorum et infirmorum et conficiendi chrisma published after the Missal of Paul VI^[18] — the blessing of the oil of the sick takes place before the end of the Eucharistic Prayer, while the blessing of the oil of catechumens and the consecration of the chrism take place after Communion.

The breath over the chrism: a sign of the Spirit

An ancient and expressive gesture accompanies the consecration: the bishop breathes over the mouth of the vessel of chrism. This breath (halitus) evokes both God's creative breath over the waters (Gen 1:2) and the gesture of the risen Christ breathing on his Apostles — "Receive the Holy Spirit" (Jn 20:22). The consecration of the chrism is indeed an epiclesis: an invocation of the Holy Spirit upon the oil, that it may become, by his power, the effective sign of the divine anointing. The Antiochene liturgy, cited by the Catechism, expresses this epiclesis with great density:

"[Father… send your Holy Spirit] upon us and upon this oil which is before us and consecrate it, that it may be for all who are anointed and sealed with it: holy myron, priestly myron, royal myron, anointing of gladness, garment of light, robe of salvation, spiritual gift, sanctification of souls and bodies, imperishable happiness, indelible seal, shield of faith, and helmet terrible against all the works of the Adversary." — Epiclesis of the consecration of the holy chrism (Antiochene liturgy), cited by the CCC § 1297^[19]

A provision for the whole year

The oils blessed and consecrated on that day are not for Holy Thursday alone: they constitute the provision for the year. The old oils are burned — often in the sanctuary lamp or at the Easter Vigil — and replaced by the new. This obligation to renew the holy oils each year gives the Chrism Mass its rhythm: it is the annual starting point from which the holy oil flows into every sacrament of the diocese, from the baptistery to the bedside of the dying.

Since the reform of Paul VI (1970), the Chrism Mass includes a proper rite that did not exist before: the renewal of priestly promises. It takes place after the homily, and makes this Mass the great annual feast of the priesthood.

The bishop's questions

The bishop solemnly questions the priests present, who answer together. The dialogue, inherited from the Roman Pontifical, first recalls the link between the day and the institution of the priesthood:

"Beloved sons, on this anniversary of the day when Christ shared his priesthood with each of us, are you resolved, before your bishop and God's holy people, to renew the promises you once made?" — The bishop to the priests, renewal of priestly promises^[20]

The priests answer: "I am." Two further questions follow: are you resolved to be more united with the Lord Jesus than ever, renouncing yourselves and remaining faithful to the commitments of your mission? Are you resolved, following Christ the Head and Shepherd, to be faithful stewards of the mysteries of God through the Word, the Eucharist, and the other celebrations, carrying out this ministry with disinterest and charity^[21]?

The appeal addressed to the people

The rite is not addressed to priests alone. The bishop then turns to the faithful and asks them to pray for their priests, that the Lord may fill them with his gifts and keep them faithful to their ministry. Then he asks them to pray for himself, the bishop, that he may be conformed to the image of Christ the Priest, the Good Shepherd, Teacher and servant of all. This double appeal shows that the priesthood is not the clergy's private affair: it is carried by the whole people of God, in mutual prayer.

The link with Holy Thursday and the institution of the priesthood

If this renewal was placed at the Chrism Mass, it is because Holy Thursday is, par excellence, the day of the priesthood. At the Last Supper, in instituting the Eucharist and saying "Do this in memory of me" (Lk 22:19), Christ also instituted the ministerial priesthood. Renewing one's promises on that day means, for each priest, returning to the source of his vocation, in communion with his bishop and his brothers. The Chrism Mass thus becomes the common anniversary of all the ordinations of the diocese.

Beyond the oils, the Chrism Mass carries a major ecclesiological meaning: it makes visible the unity of the priesthood. This is doubtless its deepest meaning, and the one the liturgy stresses most insistently.

The presbyterate around the bishop

The reference text is, here again, Paschalis Sollemnitatis, whose formula has become classic:

"The Chrism Mass, at which the bishop, concelebrating with his presbyterate, consecrates the Holy Chrism and blesses the other oils, is as it were a manifestation of the communion of the priests with their bishop in the one priesthood and the one ministry of Christ." — Congregation for Divine Worship, Paschalis Sollemnitatis, § 35^[22]

The presbyterate is the body of all the priests of a diocese, united with their bishop, of whom they are, in the words of the same document, "witnesses and cooperators in the preparation of the chrism, as they are his helpers and counselors in the daily ministry" ^[23]. Once a year, this body, usually scattered across the parishes, visibly gathers around a single altar: the image is that of a priestly family reunited around its father.

The faithful are invited too

The unity manifested is not only clerical. Paschalis Sollemnitatis insists: "The faithful should also be earnestly invited to take part in this Mass and to receive the sacrament of the Eucharist at it" ^[24]. Where the Chrism Mass was long an almost private ceremony, reserved to the clergy, the reform sought to make it a feast of the people of God: the whole diocese — bishop, priests, deacons, religious, laity — becomes aware of forming one body, nourished by the same sacraments.

Like every high point of the liturgical cycle, the Chrism Mass has proper texts that reveal its meaning. The three readings converge on a single theme: anointing and the priesthood.

Isaiah 61: "The Spirit of the Lord is upon me"

The first reading is Isaiah's great oracle on the messenger consecrated by anointing:

"The Spirit of the Lord is upon me, because the Lord has anointed me. He has sent me to bring glad tidings to the poor […]. And you, you shall be called 'priests of the Lord,' you shall be named 'ministers of our God.'" — Book of Isaiah 61:1, 6^[25]

This text foretells what the Chrism Mass accomplishes: an anointing that consecrates and sends. It makes the Messiah the Anointed One par excellence, and his people a priestly people.

Luke 4: Jesus rises in the synagogue

The Gospel continues the first reading exactly. At Nazareth, Jesus opens the scroll of Isaiah, reads this same passage — "The Spirit of the Lord is upon me" — then closes it and declares:

"Today this Scripture passage is fulfilled in your hearing." — Gospel according to Saint Luke 4:21^[26]

The anointing prophesied by Isaiah thus finds its fulfillment in Jesus: he is the Anointed One of the Spirit, from whom every Christian anointing derives. The Chrism Mass celebrates this continuity, from the anointing of Christ to that of each baptized person.

Revelation 1: "a kingdom and priests"

The second reading, from Revelation, extends the priesthood to the whole redeemed people:

"To him who loves us and has freed us from our sins by his blood, who has made us into a kingdom, priests for his God and Father, to him be glory and power forever and ever." — Revelation 1:5-6^[27]

Thus the three texts together sketch the theology of the Chrism Mass: Christ, the Anointed One of the Spirit (Isaiah, Luke), shares his anointing with the whole Church, which becomes a priestly people (Revelation), while the ministerial priesthood of priests, renewed on that day, serves this common priesthood.

The present form of the Chrism Mass — a distinct morning Mass with a renewal of promises — is recent: it dates back only to the twentieth century. But the practice of blessing the oils on Holy Thursday is very ancient. Tracing this history sheds light on today's celebration.

Ancient origins

From the earliest centuries, the Church blessed oils for its sacraments. Traces are found in several major documents: the Sacramentary of Serapion (fourth century), the Apostolic Constitutions, and the Syriac Testamentum Domini (fifth–sixth century)^[28]. The great Roman sacramentaries — the Gelasian and the Gregorian (sixth–seventh century) — already contain the formulas for blessing the oils and consecrating the chrism on Holy Thursday^[29]. The rule reserving this consecration to the bishop is likewise primitive: very early, councils (Constantinople in 381, Toledo) recalled that only the bishop consecrates the chrism^[30].

The blessing within the Holy Thursday Mass

For centuries, there was no separate "Chrism Mass." The blessing of the oils was inserted into the single morning Mass of Holy Thursday, celebrated by the bishop in his cathedral, assisted by a numerous clergy. The Roman Pontifical provided that the bishop be surrounded by twelve priests, seven deacons, and seven subdeacons — the twelve priests representing the twelve Apostles around Christ^[31]. It is from this ancient, rich, and solemn form that the present celebration derives.

The reform of Pius XII (1955): a distinct Chrism Mass

The decisive turning point came in the mid-twentieth century. By the decree "Maxima Redemptionis nostrae mysteria" (16 November 1955) and the Ordo Hebdomadae Sanctae instauratus (1956), Pius XII thoroughly reformed Holy Week. The Holy Thursday Mass, which had taken place in the morning, was moved to the evening (the Mass in Cena Domini). So as not to lose the blessing of the oils, a proper Chrism Mass, celebrated in the morning, distinct from the evening Mass, was then instituted^[32]. For the first time, the consecration of the chrism thus received its own Mass formulary.

The reform of Paul VI (1970): the renewal of promises

The reform stemming from the Second Vatican Council completed the development. The Roman Missal of Paul VI (1970) revised the Chrism Mass, gave it its present readings (Isaiah 61, Revelation 1, Luke 4), and introduced two major novelties: the renewal of priestly promises and the explicit invitation to the faithful to take part^[33]. The rite of blessing the oils was itself recast in the Ordo benedicendi oleum… et conficiendi chrisma (1970)^[34]. The Chrism Mass then became what it is today: no longer a technical ceremony for blessing oils, but a diocesan feast of the priesthood and the sacraments.

At the end of this journey, we must return to essentials. What does the Chrism Mass say within the cycle of the Christian year? Why did the Church want, each spring, this gathering around the holy oil?

Sanctifying the year with the holy oil

The answer echoes that of the whole liturgical year: sanctifying time. By consecrating each year, on a fixed date, the oil that will serve for every sacrament, the Church inscribes Christ's anointing into the calendar. From the Chrism Mass flow, as from a spring, all the gestures of anointing of the year: the foreheads of the confirmed, the hands of newly ordained priests, the bodies of the sick, the heads of the newly baptized. The chrism consecrated on the morning of Holy Thursday thus waters, for twelve months, the sacramental life of an entire diocese. The Chrism Mass is not a holy day of obligation — it is not among the days of precept — but it is one of the cycle's quiet summits, where we touch the very matter of grace.

Holy Thursday, day of anointing and priesthood

Finally, the Chrism Mass says something about Holy Thursday as a whole. This day is the day of the Eucharist and the priesthood; it is also, through the morning Mass, the day of anointing. The two answer each other: there is no priesthood without anointing, and no anointing that does not tend toward the altar. In the morning, the bishop consecrates the oil and the priests renew their promises; in the evening, at the Mass of the Supper, Christ washes the feet and gives his Body. From the fragrant oil of the morning to the night of the Passion, Holy Thursday thus unfolds the whole mystery of Christ the Priest, who offered himself to make of his people, in the words of Revelation, "a kingdom and priests for his God and Father" ^[35].

This article is part of Ignispedia's series on liturgical time and cycle. To place the Chrism Mass within the whole cycle and explore its context further:

• The Easter Triduum — the three holy days that open on the evening of Holy Thursday, just after the Chrism Mass.
• The liturgical year — the overview of the cycle, Holy Week, and the theology of time.
• Holy days of obligation — the days of precept of the calendar (the Chrism Mass is not one of them).
• Sunday — the Lord's Day, the source of all Christian liturgy.
• Ordinary Time and The calendar of saints — the other landmarks of the liturgical cycle.