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.
Sabbath in Christianity worship, and in the duties of necessity and mercy." Strict Sunday Sabbatarianism is sometimes called "Puritan Sabbath", which may be contrasted with "Continental Sabbath". The latter follows the reformed confessions of faith of Continental Europe such as the "Heidelberg Catechism", which emphasize rest and worship on the Lord's Day, but do not explicitly forbid recreational activities. However, in practice, many continental Reformed Christians also abstain from recreation on the Sabbath, following the admonition by the Heidelberg Catechism's author Zacharaias Ursinus that "To keep holy the Sabbath, is not to spend the day in slothfulness and idleness". Though first-day Sabbatarian practice