The Cairo Genizah contains hundreds of thousands of pages of treatises and documents – texts of the Bible and commentaries, biblical and rabbinic dictionaries, halakhic works, poetry and prayer, philosophical and polemic treatises, deeds, documents, official and personal letters, in Hebrew, Aramaic, Judeo-Arabic and Arabic, Judeo-Persian and Yiddish, dating from before the eighth century until the fifteenth century and later.