What is the oldest organisation in continuous existence in the world? The swami order?

I imagine the Orthodox Church claims to have been in continuous existence for 1980 years. Am I right in thinking the swami order is 1000 years or so older than that? Is there any other human organisation of comparable age? How about the rabbinate for example? Any scholars of Judaism out there know? What about the... show more I imagine the Orthodox Church claims to have been in continuous existence for 1980 years. Am I right in thinking the swami order is 1000 years or so older than that? Is there any other human organisation of comparable age? How about the rabbinate for example? Any scholars of Judaism out there know? What about the Zoroastrian priesthood?
12 answers 12