Seraph

    a type of celestial or heavenly being in the Abrahamic religions.

Literally "burning ones", the word seraph is normally a synonym for serpents when used in the Hebrew Bible. A seminal passage in the Book of Isaiah (6.1-8) used the term to describe fiery six-winged beings that fly around God's throne singing "holy, holy, holy". This throne scene, with its triple invocation of holiness (a formula that came to be known as the Trisagion), profoundly influenced subsequent theology, literature and art. Its influence is frequently seen in works depicting angels, heaven and apotheosis. Seraphs are mentioned as celestial beings in an influential Hellenistic work, the Book of Enoch, and the Book of Revelation. Tradition places seraphs in the fifth rank of ten in the Jewish angelic hierarchy and the highest rank in the Christian angelic hierarchy.