Megaleh Sod [supercommentary to Abraham ibn Ezra’s commentary to Five Scrolls].

First printed in Hamburg in 1765, this Vilna edition of Megaleh Sod bears the formal Haskamah [encomium] of R. Abraham Abele Posveller, Chief Justice of Vilna. The Author, Aaron Gumpertz (1723-69) was the scion of one of the wealthiest Jewish families in all Germany. Moses Mendelssohn was an admirer of Gumpertz and wholeheartedly recommended his Ma’amar ha-Mada. See Sh.Feiner, The Jewish Enlightenment (2004) pp.42-43. Appended to the work, is the supplement on the importance of secular studies