Mass (liturgy) in the context of "Sistine Chapel"

A church service (or a worship service) is a formalized period of Christian communal worship, often held in a church building. Most Christian denominations hold church services on the Lord's Day (offering Sunday morning and Sunday evening services); a number of traditions have mid-week services, while some traditions worship on a Saturday. In some Christian denominations, church services are held daily, with these including those in which the seven canonical hours are prayed, as well as the offering of the Mass, among other forms of worship. In addition to this, many Christians attend services on holy days such as Christmas, Ash Wednesday, Good Friday, Ascension Thursday, among others depending on the Christian denomination.

The church service is the gathering together of Christians to be taught the "Word of God" (the Christian Bible) and encouraged in their faith. Technically, the church in "church service" refers to the gathering of the faithful rather than to the physical place in which it takes place. In most Christian traditions services are presided over by clergy wherever possible, but some traditions utilize lay preachers. Styles of service vary greatly, from the Catholic, Lutheran, Eastern Orthodox, Oriental Orthodox, Reformed (Continental Reformed, Presbyterian and Congregationalist) and Anglican traditions of liturgical worship to informal worship characterized by certain free church traditions, common among Methodists and Baptists, that often combine worship with teaching for the believers, which may also have an evangelistic component appealing to backsliders and the non-Christians in the congregation (cf. altar call). Quakers and some other groups have no formal outline to their services, but allow the worship to develop as the participants present feel moved.

Lutheranism or Evangelical Lutheranism is a major branch of Protestantism that emerged under the work of Martin Luther, the 16th-century German friar and reformer whose efforts to reform the theology and practices of the Catholic Church launched the Reformation in 1517. The Lutheran Churches adhere to the Bible and the Ecumenical Creeds, with Lutheran doctrine being explicated in the Book of Concord. Lutherans hold themselves to be in continuity with the apostolic church and affirm the writings of the Church Fathers and the first four ecumenical councils.

The schism between Roman Catholicism and Lutheranism, which was formalized in the Edict of Worms of 1521, centered on two points: the proper source of authority in the church, often called the formal principle of the Reformation, and the doctrine of justification, the material principle of Lutheran theology. Lutheranism advocates a doctrine of justification "by Grace alone through faith alone on the basis of Scripture alone", the doctrine that scripture is the final authority on all matters of faith. This contrasts with the belief of the Roman Catholic Church, defined at the Council of Trent, which contends that final authority comes from both Scripture and tradition. In Lutheranism, tradition is subordinate to Scripture and is cherished for its role in the proclamation of the Gospel.

A libretto (from the Italian word libretto, lit. 'booklet') is the text used in, or intended for, an extended musical work such as an opera, operetta, masque, oratorio, cantata or musical. The term libretto is also sometimes used to refer to the story line of a ballet or the texts of major liturgical works, such as the Mass, requiem, or sacred cantata.

The Italian word libretto (pronounced [liˈbretto], plural libretti [liˈbretti]) is the diminutive of the word libro ("book"). Sometimes other-language equivalents are used for libretti in that language, livret for French works, Textbuch for German and libreto for Spanish. A libretto is distinct from a synopsis or scenario of the plot, in that the libretto contains all the words and stage directions, while a synopsis summarizes the plot. Some ballet historians also use the word libretto to refer to the 15- to 40-page books which were on sale to 19th century ballet audiences in Paris and contained a very detailed description of the ballet's story, scene by scene.

Edward VI (12 October 1537 – 6 July 1553) was King of England and Ireland from 28 January 1547 until his death in 1553. He was crowned on 20 February 1547 at the age of nine. The only surviving son of Henry VIII by his third wife, Jane Seymour, Edward was the first English monarch to be raised as a Protestant. During his reign, the realm was governed by a regency council because Edward never reached maturity. The council was first led by his uncle Edward Seymour, Duke of Somerset (1547–1549), and then by John Dudley, Duke of Northumberland (1550–1553).

Edward's reign was marked by many economic problems and social unrest that in 1549 erupted into riot and rebellion. An expensive war with Scotland, at first successful, ended with military withdrawal from Scotland and Boulogne-sur-Mer in exchange for peace. The transformation of the Church of England into a recognisably Protestant body also occurred under Edward, who took great interest in religious matters. His father, Henry VIII, had severed the link between the English Church and Rome but continued to uphold most Catholic doctrine and ceremony. During Edward's reign, Protestantism was established for the first time in England, with reforms that included the abolition of clerical celibacy and the Mass and the imposition of compulsory English in church services.

A liturgical book, or service book, is a book published by the authority of a church body that contains the text and directions for the liturgy of its official religious services.

The Evangeliary or Book of the Gospels is a liturgical book containing only those portions of the four gospels which are read during Mass or in other public offices of the Church. The corresponding terms in Latin are Evangeliarium and Liber evangeliorum.

The Evangeliary developed from marginal notes in manuscripts of the Gospels and from lists of gospel readings (capitularia evangeliorum). Generally included at the beginning or end of the book containing the whole gospels, these lists indicated the days on which the various extracts or pericopes were to be read. They developed into books in which they were accompanied by the texts to which they referred, with the passages arranged in accordance with the liturgical year rather than in their order within the gospels themselves, and omitting passages not used in the liturgy.