Eliezer ben-Nathan sometimes also surnamed Metz, from his native place, was a contemporary of Rashi, and eminent in the cabalistic science. His renown is greatly due to a work on Talmudical law which he composed in 1152, under the title אֶבֶן הָעֶזֶר (stone of help), printed at Prague in 1610. The Rabbins Jachia and Wolf ascribe to him also the authorship of Tsophnath Paaneach, but Rossi asserts that Eliezer of Spain was the real author of that work. It appears to be only another title of the preceding work. He wrote also פַּסַקֵי דַינַים (Constantinople, 1520, and later) and מִאֲמִר הִשׂכֵּל (Cremona, 1554, and later); both relating to the Jewish ritual. — Hoefer, Nouv. Biog. Gener. 15:826; Grasse, Allgem. Literargesch. 3:502.