Holiness, or sanctity, is in general the state of being holy (perceived by religious individuals as associated with the divine) or sacred (considered worthy of spiritual respect or devotion; or inspiring awe or reverence among believers in a given set of spiritual ideas). In other contexts, objects are often considered 'holy' or 'sacred' if used for spiritual purposes, such as the worship or service of gods. These terms can also be used in a non-spiritual or semi-spiritual context ("sacred truths" in a constitution). It is often ascribed to people ("a holy man" of religious occupation, "holy prophet" who is venerated by his followers), objects ("sacred artifact" that is venerated and blessed ), times ("holy days" of spiritual introspection, such as during winter holidays), or places ("sacred ground", "holy place").

The word "sacred" descends from the Latin sacrum, which referred to the gods or anything in their power, and to sacerdos, priest; sanctum, set apart. It was generally conceived spatially, as referring to the area around a temple.

Blind Guardian is a German power metal band formed in the mid-1980s in Krefeld, West Germany. They are often credited as one of the seminal and most influential bands in the power metal and speed metal subgenres. Blind Guardian is a part of the German heavy metal scene that emerged in the mid-1980s.

The band's lyrics, written by vocalist Hansi Kürsch, are inspired by the fiction of fantasy authors such as J. R. R. Tolkien, Michael Moorcock, Robert Jordan and George R. R. Martin as well as traditional legends and epics. Over the years, a running theme has developed personifying the band members as travelling bards, leading some fans to refer to the band affectionately as "The Bards".

Blind Guardian was formed in 1984 in Krefeld, Germany, by Hansi Kürsch (vocals, bass) and Andre Olbrich (guitar) under the name Lucifer's Heritage. The band first released two demos in 1985 and 1986, despite undergoing chaotic lineup changes: Markus Dörk (guitar) and Thomen Stauch (drums) were replaced by Christof Theißen and Hans-Peter Frey, respectively. Finally, in 1987, Marcus Siepen joined and Thomen came back to form the lineup which would stay consistent for the next 18 years.

The Sacred Heart (also known as Most Sacred Heart of Jesus) is one of the most famous religious devotions to Jesus' physical heart as the representation of his divine love for humanity.

This devotion is predominantly used in the Catholic Church and among some high-church Anglicans and Lutherans. The devotion especially emphasizes the unmitigated love, compassion, and long-suffering of the heart of Christ towards humanity. The origin of this devotion in its modern form is derived from a French Roman Catholic nun, Marguerite Marie Alacoque, who said she learned the devotion from Jesus during a mystical experience. Predecessors to the modern devotion arose unmistakably in the Middle Ages in various facets of Catholic mysticism.

In the Roman Catholic tradition, the Sacred Heart has been closely associated with Acts of Reparation to Jesus Christ. In his encyclical Miserentissimus Redemptor, Pope Pius XI stated: "the spirit of expiation or reparation has always had the first and foremost place in the worship given to the Most Sacred Heart of Jesus". The Golden Arrow Prayer directly refers to the Sacred Heart.