a Jewish writer of Germany, was born in 1696, and died at Altona in 1776. He is the author of numerous treatises, among which are, בית אל, a ritual for the whole year (Altonra, 1745, 4 parts, and often; latest ed. Lemberg, 1860): — A Life of Jon. Eybenschftz, entitled, בית יהונתן (Altona, 1752):- מטפחת ספרים, The Wrapper of Books (ibid. 1763); a critique on the Sohar: — צצים ופרחים On the Fundamental Doctrines of the Cabala (ibid. 1756): — תורת הקנאות, A Collection of Accounts Referring to Sabbathai Zewi, his Pupils and Adherents (ibid. 1752; Lemberg, 1870). See Furst, Bibl. Jud. 1:240 sq.; Gritz, Geschichte der Juden, 10:396 sq.; Ginsburg, The Kabbalah, page 141 sq.; Jost, Geschichte des Judenthums u.s. Sekten, 3:194, 252,308; Furst, Jacob Emden, in Literaturbl. des Orients, 1846, c. 442; also the art. EYBENSCHUTZ. (B.P.)