Judah Halevi,
Kitab al Khazari (Kuzari) — Part Three
“ The fast of this day is such as brings one near to the angels, because it is spent in humility and contrition, standing, kneeling, praising and singing. All his physical faculties are denied their natural requirements, being entirely abandoned to religious service, as if the animal element had disappeared. The fast of a pious man is such that eye, ear, and tongue share in it, that he regards nothing except that which brings him near to God. ”
