Christian cross in the context of "Cross pattée"

A church, church building, or chapel is a building used for Christian worship services and Christian activities. The earliest identified Christian church is a house church founded between 233 AD and 256 AD. The word church also describes a body or assembly of Christian believers, while "the Church" refers to the worldwide Christian religious community.

In traditional Christian architecture, the plan view of a church often forms a Christian cross. The center aisle and seating create the vertical beam, while the bema and altar form the horizontal arms. Towers or domes rise above the heaven-facing roof line to encourage contemplation of the divine. Modern churches employ varied architectural styles, and many buildings originally designed for other purposes have been converted to churches. From the 11th to the 14th centuries, Western Europe experienced a wave of church construction.

The Abrahamic religions are a set of monotheistic religions that respect or admire the religious figure Abraham, namely Judaism, Christianity, and Islam, though the term also often encompasses several smaller faiths. The religions of this set share doctrinal, historical, and geographic overlap that contrasts them with Indian religions, Iranian religions, and East Asian religions. The term, introduced in the 20th century, replaced "Judeo-Christian" to include Islam as an Abrahamic religion and acknowledge differences between Judaism and Christianity. However, it has been criticized for oversimplifying cultural and doctrinal nuances.

Crucifixion is a method of capital punishment in which the condemned is tied or nailed to a large wooden cross, beam or stake and left to hang until eventual death, which could take minutes to days. It was first used as a punishment by the Achaemenids, Carthaginians, and Romans, among others. Crucifixion has been used in some countries as recently as the 21st century.

The crucifixion of Jesus is central to Christianity and the cross (in Roman Catholicism usually depicted with Jesus nailed to it) is Christianity's preeminent religious symbol. His death is the most prominent example of crucifixion in history, which in turn has led many cultures in the modern world to associate the execution method closely with Jesus and with Christian spirituality. Other figures in Christianity are traditionally believed to have undergone crucifixion as well, including Saint Peter, who Church tradition says was crucified upside-down, and Saint Andrew, who Church tradition says was crucified on an X-shaped cross. Today, limited numbers of Christians voluntarily undergo non-lethal crucifixions as a devotional practice.

A grave is a location where a dead body (typically that of a human, although sometimes that of an animal) is buried or interred after a funeral. Graves are usually located in special areas set aside for the purpose of burial, such as graveyards or cemeteries.

In some religions, it is believed that the body must be burned or cremated for the soul to survive; in others, the complete decomposition of the body is considered to be important for the rest of the soul (see bereavement).

The Crusading movement was a major religious, political and military endeavour of the Middle Ages—began in 1095 when Pope Urban II, at the Council of Clermont, proclaimed the First Crusade to liberate Eastern Christians from Muslim rule. He framed it as a form of penitential pilgrimage, offering spiritual rewards. By then, papal authority in Western Christendom had grown through church reforms, and tensions with secular rulers encouraged the notion of holy war—combining classical just war theory, biblical precedents, and Augustine's teachings on legitimate violence. Armed pilgrimage aligned with the era's Christocentric and militant Catholicism, sparking widespread enthusiasm. Western expansion was further enabled by economic growth, the decline of older Mediterranean powers, and Muslim disunity. These factors allowed crusaders to seize territory and found four Crusader states. Their defence inspired successive Crusades, and the papacy extended spiritual privileges to campaigns against other targets—Muslims in Iberia, pagans in the Baltic, and other opponents of papal authority.

The Crusades fostered distinctive institutions and ideologies, having a great impact on medieval Europe and the Mediterranean. Though aimed primarily at the warrior elite through appeals to chivalric ideals, they depended on broad support from clergy, townspeople, and peasants. Women, despite being discouraged, were involved as participants, proxies for absent crusaders, or victims. Although many crusaders were motivated by indulgences (remission of sins), material gain also played a part. Crusades were typically initiated through papal bulls, with participants pledging to join by "taking the cross"—sewing a cross onto their garments. Failure to fulfil vows could result in excommunication. Periodic waves of zeal produced unsanctioned "popular crusades".

Old Norse religion, also known as Norse paganism, is a branch of Germanic religion which developed during the Proto-Norse period, when the North Germanic peoples separated into distinct branches. It was replaced by Christianity and forgotten during the Christianisation of Scandinavia. Scholars reconstruct aspects of North Germanic Religion by historical linguistics, archaeology, toponymy, and records left by North Germanic peoples, such as runic inscriptions in the Younger Futhark, a distinctly North Germanic extension of the runic alphabet. Numerous Old Norse works dated to the 13th-century record Norse mythology, a component of North Germanic religion.

Old Norse religion was polytheistic, entailing a belief in various gods and goddesses. These deities in Norse mythology were divided into two groups, the Æsir and the Vanir, who in some sources were said to have engaged in war until realizing that they were equally powerful. Among the most widespread deities were the gods Odin and Thor. This world was inhabited also by other mythological races, including jötnar, dwarfs, elves, and land-wights. Norse cosmology revolved around a world tree known as Yggdrasil, with various realms, such as Midgard, where humans live. These involved multiple afterlives, several of which were controlled by a particular deity.