This book, and particularly the commentary and method of the German mystic, Eleazar of Worms, exercised a deep influence upon him, and had the effect of greatly increasing his mystical bent. 1279 - Wrote at Patras, in Greece, the first of his prophetic books, Sefer ha-Yashar (The Book of the Righteous). 1280 - Went to Rome, in order to effect the conversion of Pope Nicholas III on the day before N