Moses Hayim Luzzatto (1707-1746), rabbi, mystic, teacher, poet, playwright, and writer of ethical works, gathered around him in his 'house of study' in Padua an inner circle of devout Jews who shared his belief in the imminent arrival of the messianic age and who privately identified members of their circle as divinely ordained to usher in the Redemption. To the rabbis of Venice and Frankfurt, however, Luzzatto was a heretic, whose claims to have written works at the dictation of a messenger from heaven could not be genuine. Under pressure from them he was obliged to withdraw a number of such...