Witches' Sabbath (The Great He-Goat) powdered glass, orpiment and iron oxides. He likely worked with mixed materials. Technical analysis indicates that most of the Black Paintings begun with preparatory drawings. "Witches' Sabbath" is the exception; the final composition seems to have been painted directly onto the wall. Art historian Fred Licht notes that Goya's brushwork appears "clumsy, ponderous, and rough" and lacking finish compared to his earlier work. Licht believes this was a deliberate ploy to physically convey dismay at human inadequacy and his own feelings of personal doubt. Unique in the series, "Witches' Sabbath" was not significantly altered by Goya after his initial work.
Witches' Sabbath to Sunday, or to a time period similar to Sabbath in the seventh-day church minority. In connection with the medieval beliefs in the evil power of witches and in the malevolence of Jews and Judaizing heretics (both being Sabbathkeepers), satanic gatherings of witches were by outsiders called "sabbats", "synagogues", or "convents". Local variations of the name given to witches' gatherings were frequent. Perhaps the earliest work that mentions a something like a gathering that might be interpreted, from the Christian point of view, as witches sabbath is"Canon Episcopi" (906) and later included in Burchard of Worms's collection in the 11th