The Jews: had an Ecclesiastical Establishment

“Next, have your brother Aaron brought to you from among the Israelites, along with his sons Nadab, Abihu, Eleazar, and Ithamar, to serve Me as priests.

Behold, I Myself have selected your fellow Levites from the Israelites as a gift to you, dedicated to the LORD to perform the service for the Tent of Meeting.

Then you will know that I have sent you this commandment so that My covenant with Levi may continue,” says the LORD of Hosts. …