 The texts, which were rendered on leather, reflect the use of Aramaic in the fourth century BCE Achaemenid administration of Bactria and Sogdia.Old Aramaic and Biblical Hebrew both form part of the group of Northwest Semitic languages, and during antiquity, there may still have been substantial mutual intelligibility.In Pesahim, Tractate 87b, Hanina bar Hama said that God sent the exiled Jews to Babylon because "[the Babylonian] language is akin to the "Leshon Hakodesh"".