In 1322, a Jewish doctor named Abner entered a synagogue in the Castilian city of Burgos and began to weep in prayer. Falling asleep, he dreamed of a «great man» who urged him to awaken from his slumber. Shortly thereafter, he converted to Christianity and wrote a number of works attacking his old faith. Abner tells the story in fantastic detail in the opening to his Hebrew-language but anti-Jewish polemical treatise, Teacher of Righteousness . In the religiously plural context of the medieval...
