 The principal Karaite Bible commentators were Nahavendi (ninth century); Abu al-Faraj Harun (ninth century), exegete and Hebrew grammarian; Solomon ben Yerucham (tenth century); Sahal ben Mazliach (died 950), Hebrew grammarian and lexicographer; Joseph al-Bazir (died 930); Japhet ben Ali, the greatest Karaite commentator of the tenth century; and Judah Hadassi (died 1160).Saadiah of Fayûm (died 942), the most powerful writer against the Karaites, translated the Bible into Arabic and added notes.Besides commentaries on the Bible, Saadiah wrote a systematic treatise bringing revealed religion into harmony with Greek philosophy.