In Illuminating in Micrography, Dalia-Ruth Halperin analyzes the Catalan Micrography Maḥzor, a fourteenth-century Barcelonan manuscript in Israel’s National Library. Decorated with micrography, the Jewish scribal art typical of Bible manuscripts, this maḥzor, which includes a rich full-page panel micrography cycle, is unique. Along with the codicological and paleographical analysis, essential for understanding the scribe’s thought and working processes, the author’s meticulous reading of the micrography text reveals the scribe’s textual editing and manipulations. Decoding his writing flow and sequences revealed a close association between the penned text and the images formed, which reflect a Jewish theosophical-theurgical cycle. Evidence of the scribe’s association with the renowned Bassa atelier enhances our knowledge of the cultural, economic, and ethnic realities of the time.