Relic in the context of "Crown of Thorns"

Saint Catherine's Monastery (Arabic: دير القدّيسة كاترين Dayr al-Qiddīsa Katrīn, Greek: Ιερά Μονή Αγίας Αικατερίνης Όρους Σινά, romanized: Iërá Moní Ayías Ekaterínis Órus Siná), officially the Sacred Autonomous Royal Monastery of Saint Catherine of the Holy and God-Trodden Mount Sinai, is a Christian monastery located in the Sinai Peninsula of Egypt. Located at the foot of Mount Sinai, it was built between 548 and 565, and is the world's oldest continuously inhabited Christian monastery.

The monastery was built by order of the Byzantine emperor Justinian I, enclosing what is claimed to be the burning bush seen by Moses. Centuries later, the purported body of Catherine of Alexandria, said to have been found in the area, was taken to the monastery; Catherine's relics turned it into an important Christian pilgrimage, and the monastery was eventually renamed after the saint.

Sacred describes something that is dedicated or set apart for the service or worship of a deity; is considered worthy of spiritual respect or devotion; or inspires awe or reverence among believers. The property is often ascribed to objects (a "sacred artifact" that is venerated and blessed), or places ("sacred ground").

French sociologist Émile Durkheim considered the dichotomy between the sacred and the profane to be the central characteristic of religion: "religion is a unified system of beliefs and practices relative to sacred things, that is to say, things set apart and forbidden." In Durkheim's theory, the sacred represents the interests of the group, especially unity, which are embodied in sacred group symbols, or using team work to help get out of trouble. The profane, on the other hand, involve mundane individual concerns.

Veneration (Latin: veneratio; Greek: τιμάω timáō), refers to the practice of honoring people and articles of religious significance. The term applies, for example, to the veneration of saints and the veneration of relics.

To venerate a saint is honour a person who has been identified as having a high degree of sanctity or holiness. Angels are shown similar veneration in many religions. Veneration of saints is practiced, formally or informally, by adherents of some branches of all major religions, including Christianity, Judaism, Hinduism, Islam, Buddhism and Jainism.

A shrine (Latin: scrinium "case or chest for books or papers"; Old French: escrin "box or case") is a sacred space dedicated to a specific deity, ancestor, hero, martyr, saint, daemon, or similar figure of respect, wherein they are venerated or worshipped. Shrines often contain idols, relics, or other such objects associated with the figure being venerated. A shrine at which votive offerings are made is called an altar.

Shrines are found in many of the world's religions, including Christianity, Islam, Hinduism, Buddhism, Chinese folk religion, Shinto, indigenous Philippine folk religions, and Germanic paganism as well as in secular and non-religious settings such as a war memorial. Shrines can be found in various settings, such as churches, temples, cemeteries, or as household shrines. Portable shrines are also found in some cultures.

The word catholic (derived via Late Latin catholicus, from the ancient Greek adjective καθολικός (katholikos) 'universal') comes from the Greek phrase καθόλου (katholou) 'on the whole, according to the whole, in general', and is a combination of the Greek words κατά (kata) 'about' and ὅλος (holos) 'whole'. The first known use of "Catholic" was by the church father Ignatius of Antioch in his Letter to the Smyrnaeans (circa 110 AD). In the context of Christian ecclesiology, it has a rich history and several usages.

The word in English can mean either "of the Catholic faith" or "relating to the historic doctrine and practice of the Western Church". "Catholicos", the title used for the head of some churches in Eastern Christian traditions, is derived from the same linguistic origin.