One really interesting one is that of the Vedas, where there is a priest specifically to check if there are no mistakes and errors made. From wikipedia’s vedic

One really interesting one is that of the Vedas, where there is a priest specifically to check if there are no mistakes and errors made. From wikipedia’s vedic priesthood article : The brahman was the reciter of hymns from the atharvaveda who was largely silent and observes the procedures and uses Atharvaveda mantras to 'heal' it when mistakes have been made. So at least when it comes to accuracy, it was very resilient. I think my history teacher also mentioned something similar for the Jewish priesthood.