Watcher (Aramaic iyr, plural iyrin, [ir(in)]; Theodotian transliteration: ir; from the root of the Hebrew er, “awake, watchful”). o, transl. egrgoroi; “Watchers”, “those who are awake”; “guard”, “watching”) is a biblical angel . The plural and singular forms of Watcher appear in the Book of Daniel (4th–2nd century BC), where their holiness is mentioned. The apocryphal Books of Enoch (c. 2nd–1st century BC) make reference to both good and evil Watchers, with a particular emphasis on the disobedient.