Catholic Church

The Liturgy of the Hours (Latin: Liturgia Horarum), Divine Office (Latin: Divinum Officium), or Opus Dei ("Work of God") is a set of Catholic prayers comprising the canonical hours, often also referred to as the breviary, of the Latin Church. The Liturgy of the Hours forms the official set of prayers "marking the hours of each day and sanctifying the day with prayer." The term "Liturgy of the Hours" has been retroactively applied to the practices of saying the canonical hours in both the Christian East and West–particularly within the Latin liturgical rites–prior to the Second Vatican Council, and is the official term for the canonical hours promulgated for usage by the Latin Church in 1971. Before 1971, the official form for the Latin Church was the Breviarium Romanum, first published in 1568 with major editions through 1962.

The Liturgy of the Hours, like many other forms of the canonical hours, consists primarily of psalms supplemented by hymns, readings, and other prayers and antiphons prayed at fixed prayer times. Together with the Mass, it constitutes the public prayer of the church. Christians of both Western and Eastern traditions (including the Latin Catholic, Eastern Catholic, Eastern Orthodox, Oriental Orthodox, Assyrian, Lutheran, Anglican, and some other Protestant churches) celebrate the canonical hours in various forms and under various names. The chant or recitation of the Divine Office therefore forms the basis of prayer within the consecrated life, with some of the monastic or mendicant orders producing their own permutations of the Liturgy of the Hours and older Roman Breviary.

In the Catholic Church, a blessing is a rite consisting of a ceremony and prayers performed in the name and with the authority of the Church by a duly qualified minister by which persons or things are sanctified as dedicated to divine service or by which certain marks of divine favour are invoked upon them. In a wider sense blessing has a variety of meanings in the sacred writings:

• Synonymous with praise; thus the Psalmist, "I will bless the Lord at all times; praise shall be always in my mouth."
• A wish or desire that all good fortune, especially of a spiritual or supernatural kind, may go with the person or thing, as the Psalmist says, "Blessed art thou, and it shall be well with thee".
• The sanctification or dedication of a person or thing to some sacred purpose; e.g., Jesus took bread, said the blessing, broke it....
• A gift, as when Naaman addresses Eliseus: "Now therefore, I pray thee, take a blessing of thy servant".

The Ambrosian Rite (Italian: Rito Ambrosiano) is a Latin liturgical rite of the Catholic Church and the Eastern Orthodox Church (specifically The Divine Liturgy of Saint Ambrose). The rite is named after Saint Ambrose, a bishop of Milan in the fourth century. It is used by around five million Catholics in the greater part of the Archdiocese of Milan (excluding Monza, Treviglio and Trezzo sull'Adda), in some parishes of the Diocese of Como, Bergamo, Novara, Lodi, in the Diocese of Lugano, Canton of Ticino, Switzerland, less prominently in some Western Rite orthodox parishes and on special occasions of other jurisdictions.

The Ambrosian Rite has risked suppression at various points in its history. It was reformed after the Second Vatican Council (Pope Paul VI belonged to the Ambrosian Rite, having previously been Archbishop of Milan). In the 20th century, it also gained prominence and prestige from the attentions of two other scholarly Archbishops of Milan: Achille Ratti, later Pope Pius XI, and the Blessed Ildefonso Schuster, both of whom were involved in studies and publications on the rite.

The Council of Trent (Latin: Concilium Tridentinum), held between 1545 and 1563 in Trent (or Trento), now in northern Italy, was the 19th ecumenical council of the Roman Catholic Church. Prompted by the Protestant Reformation at the time, it has been described as the "most impressive embodiment of the ideals of the Counter-Reformation." It was the last time a Catholic ecumenical council was organized outside the city of Rome, and the second time a council was convened in the territory of the Holy Roman Empire (the first being the Council of Constance).

The Council issued key statements and clarifications of the Church's doctrine and teachings, including scripture, the biblical canon, sacred tradition, original sin, justification, salvation, the sacraments, the Mass, and the veneration of saints and also issued condemnations of what it defined to be heresies committed by proponents of Protestantism. The consequences of the council were also significant with regard to the Church's liturgy and censorship.

Quo Primum Tempore (English: From the beginning whence) is the incipit of an Apostolic Constitution in the form of a Papal bull issued by Pope Pius V on 14 July 1570. This Pontifical decree promulgated the Roman Missal and made its use obligatory throughout the Latin Church of the Catholic Church, except where there existed a different Catholic Mass liturgy of the Latin Church of at least two hundred years prior and standing.

The Mass is the central liturgical service of the Eucharist in the Catholic Church, in which bread and wine are consecrated and become the body and blood of Christ. As defined by the Church at the Council of Trent, in the Mass "the same Christ who offered himself once in a bloody manner on the altar of the cross, is present and offered in an unbloody manner". The Church describes the Mass as the "source and summit of the Christian life", and teaches that the Mass is a sacrifice, in which the sacramental bread and wine, through consecration by an ordained priest, become the sacrificial body, blood, soul, and divinity of Christ as the sacrifice on Calvary made truly present once again on the altar. The Catholic Church permits only baptised members in the state of grace (Catholics who are not in a state of mortal sin) to receive Christ in the Eucharist.

Many of the other sacraments of the Catholic Church, such as confirmation, holy orders, and holy matrimony, are generally administered within a celebration of Mass, but before the Second Vatican Council were often or even usually administered separately. The term Mass, also Holy Mass, is commonly used to describe the celebration of the Eucharist in the Latin Church, while the various Eastern Catholic liturgies use terms such as Divine Liturgy, Holy Qurbana, and Badarak, in accordance with each one's tradition.

A missal is a liturgical book containing instructions and texts necessary for the celebration of Mass throughout the liturgical year. Versions differ across liturgical tradition, period, and purpose, with some missals intended to enable a priest to celebrate Mass publicly and others for private and lay use. The texts of the most common Eucharistic liturgy in the world, the Catholic Church's Mass of Paul VI of the Roman Rite, are contained in the 1970 edition of the Roman Missal.

Missals have also been published for earlier forms of the Roman Rite and other Latin liturgical rites. Other liturgical books typically contain the Eucharistic liturgies of other ritual traditions, but missals exist for the Byzantine Rites, Eastern Orthodox Western Rites, Lutheran and Anglican liturgies.

The Roman Missal (Latin: Missale Romanum) is the title of several missals used in the celebration of the Roman Rite. Along with other liturgical books of the Roman Rite, the Roman Missal contains the texts and rubrics for the celebration of the most common liturgy and Mass of the Catholic Church.

The Roman Breviary (Latin: Breviarium Romanum) is a breviary of the Roman Rite in the Catholic Church. A liturgical book, it contains public or canonical prayers, hymns, the Psalms, readings, and notations for everyday use, especially by bishops, priests, and deacons in the Divine Office (i.e., at the canonical hours, the Christians' daily prayer).

The volume containing the daily hours of Catholic prayer was published as the Breviarium Romanum (Roman Breviary) from its editio princeps in 1568 under Pope Pius V until the reforms of Paul VI (1974), when replaced by the Liturgy of the Hours.

The Tridentine Mass, also known as the Extraordinary Form of the Roman Rite, the usus antiquior (Latin for 'more ancient use'), the Vetus Ordo ('Old Order'), the Traditional Latin Mass (TLM), or the Traditional Rite, is the form of Mass found in the Roman Missal of the Catholic Church codified in 1570 and published thereafter with amendments up to 1962. Celebrated almost exclusively in Ecclesiastical Latin, it was the most widely used Eucharistic liturgy in the world from its issuance in 1570 until its replacement by the Mass of Paul VI promulgated in 1969 (with the revised Roman Missal appearing in 1970).

"Tridentine" is derived from the Latin Tridentinus, lit. 'relating to the city of Trent', where the Council of Trent was held at the height of the Counter-Reformation. In response to a decision of that council, Pope Pius V promulgated the 1570 Roman Missal, making it mandatory throughout the Latin Church, except in places and religious orders with rites or uses from before 1370.