Good Friday in the context of "Via Crucis"

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.

The Last Supper is the final meal that, in the Gospel accounts, Jesus shared with his apostles in Jerusalem before his crucifixion. The Last Supper is commemorated by Christians especially on Holy Thursday. The Last Supper provides the scriptural basis for the Eucharist, also known as "Holy Communion" or "The Lord's Supper". Jesus having a final meal with his disciples is almost beyond dispute among scholars, and belongs to the framework of the narrative of Jesus' life.

The New Testament mentions the Last Supper in four of its books. The First Epistle to the Corinthians (I Cor. 11:23–25) contains the earliest known mention. The four canonical gospels state that the Last Supper took place in the week of Passover, days after Jesus's triumphal entry into Jerusalem, and before Jesus was crucified on Good Friday (Matthew 26:17–29; Mark 14:12–25; Luke 22:7–38). During the meal, Jesus predicts his betrayal by one of the apostles present, and foretells that before the next morning, Peter will thrice deny knowing him.

The Good Friday Agreement (GFA) or Belfast Agreement (Irish: Comhaontú Aoine an Chéasta or Comhaontú Bhéal Feirste; Ulster Scots: Guid Friday Greeance or Bilfawst Greeance) is a pair of agreements signed on 10 April (Good Friday) 1998 that ended most of the violence of the Troubles, an ethnic and national conflict in Northern Ireland since the late 1960s. It was a major development in the Northern Ireland peace process of the 1990s. It is made up of the Multi-Party Agreement between most of Northern Ireland's political parties, and the British–Irish Agreement between the British and Irish governments. Northern Ireland's present devolved system of government is based on the agreement.

Issues relating to sovereignty, governance, discrimination, military and paramilitary groups, justice and policing were central to the agreement. It restored self-government to Northern Ireland on the basis of "power sharing" and it included acceptance of the principle of consent, commitment to civil and political rights, cultural parity of esteem, police reform, paramilitary disarmament and early release of paramilitary prisoners, followed by demilitarisation. The agreement also created a number of institutions between Northern Ireland and Ireland ("North–South"), and between Ireland and the United Kingdom ("East–West").

Christian liturgy is a pattern for worship used (whether recommended or prescribed) by a Christian congregation or denomination on a regular basis. The term liturgy comes from Greek and means "public work". Within Christianity, liturgies descending from the same region, denomination, or culture are described as ritual families.

When Christians meet for worship, they perform a liturgy (work), offering service to God together. The majority of Christian denominations hold their principal church service on Sunday, the first day of the week, which is known as the Lord's Day. In some Christian denominations, liturgies are held daily, with these including those in which the canonical hours are prayed, as well as the offering of the Eucharistic liturgies such as Mass, among other forms of worship. In addition to this, many Christians attend services of worship on holy days such as Christmas, Ash Wednesday, Good Friday, Ascension Thursday, among others depending on the Christian denomination.

Easter, also called Pasch (/pæsk/) or Pascha (Aramaic: פַּסְחָא , paskha; Greek: πάσχα, páskha) or Resurrection Sunday, is a Christian festival and cultural holiday commemorating the resurrection of Jesus from the dead, described in the New Testament as having occurred on the third day of his burial following his crucifixion by the Romans at Calvary c. 30 AD. It is the culmination of the Passion of Jesus, preceded by Lent (or Great Lent), a 40-day period of fasting, prayer, and penance.

Easter-observing Christians commonly refer to the last week of Lent, before Easter, as Holy Week, which in Western Christianity begins on Palm Sunday (marking the entrance of Jesus in Jerusalem), includes Spy Wednesday (on which the betrayal of Jesus is mourned), and contains the days of the Easter Triduum including Maundy Thursday, commemorating the Maundy and Last Supper, as well as Good Friday, commemorating the crucifixion and death of Jesus. In Eastern Christianity, the same events are commemorated with the names of days all starting with "Holy" or "Holy and Great", and Easter itself might be called Great and Holy Pascha. In both Western and Eastern Christianity, Eastertide—also known as the Easter or Paschal season—begins on Easter Sunday and continues for seven weeks, concluding on the 50th day, Pentecost Sunday. However, in Eastern Christianity, the leavetaking of the feast occurs on the 39th day, the eve of the Feast of the Ascension.

Holy Week (Koine Greek: Ἁγία καὶ Μεγάλη Ἑβδομάς, romanized: Hagía kaì Megálē Hebdomás, lit. 'Holy and Great Week') commemorates the seven days leading up to Easter. It begins with the commemoration of Christ's triumphal entry into Jerusalem on Palm Sunday, marks the betrayal of Jesus on Spy Wednesday (Holy Wednesday), climaxing with the commemoration of the Last Supper on Maundy Thursday (Holy Thursday) and the Passion of Jesus on Good Friday (Holy Friday). Holy Week concludes with Christ's death and descent into hell on Holy Saturday. For all Christian traditions, it is a moveable observance. In Eastern Christianity, which also calls it Great Week, it is the week following Great Lent and Lazarus Saturday, starting on the evening of Palm Sunday and concluding on the evening of Great Saturday. In Western Christianity, Holy Week is the sixth and last week of Lent, beginning with Palm Sunday and concluding on Holy Saturday.

Christians believe that Jesus rested in death from the ninth hour (3 pm) on Good Friday until just before dawn on Sunday morning, the day of his resurrection from death, known as Easter Sunday. However, in 1 Peter 3:19, there may be a clue as to a task Jesus performed during this period between death and resurrection: "By which also he went and preached unto the spirits in prison." This marks the beginning of the season of Eastertide, with its first week being known as Easter Week (or Bright Week).

The Friday of Sorrows or Passion Friday is a solemn pious remembrance of the sorrowful Blessed Virgin Mary on the Friday before Palm Sunday held in the fifth week of Lent (formerly called "Passion Week"). In the Anglican Ordinariate's Divine Worship: The Missal it is called Saint Mary in Passiontide and sometimes it is traditionally known as Our Lady in Passiontide.

In certain Catholic countries, especially Brazil, Guatemala, Italy, Luxembourg, Malta, Mexico, Peru, the Philippines, and Spain, it is the beginning of Holy Week celebrations and often termed Viernes de Dolores (Friday of Sorrows) or a similar local name. It takes place exactly one week before Good Friday, and focuses on the emotional pain the Passion of Jesus Christ caused his mother, the Blessed Virgin Mary, who is venerated under the title Our Lady of Sorrows.

The Feast of the Holy Cross, Feast of the Exaltation of the Holy Cross, or Feast of the Cross, commemorates the True Cross. On 13 September, 335, the Constantinian Basilica over the Holy Sepulchre was consecrated in Jerusalem. The day after the church's consecration, the relic of the cross was shown ("exalted") for the first time to the people for veneration. Later, the feast was also associated with the commemoration of the recovery of the Holy Cross by emperor Heraclius on 13 September 628.

In the liturgical year, there are several celebrations which honor and celebrate the cross used in the crucifixion. Unlike Good Friday, which is dedicated to the passion of Christ and the crucifixion, these feast days celebrate the Cross itself, as the sign of salvation. It is celebrated by Catholics (Latin Church Catholics, Eastern Catholics), Eastern Orthodox, Oriental Orthodox, Church of the East, Old Catholics, Lutherans and Anglicans, and to a lesser extent by Presbyterians, Methodists and Baptists. The most common day of commemoration is September 14 for churches that use the Gregorian calendar and September 27 for churches that use the Julian calendar, Ge'ez calendar, or Coptic calendar.