Dating the list of Mishmarot Kehunah
A few days ago I was privileged enough to hear a fascinating short TED-sized lecture by one of the doctorate students in my department at university. This student, a rabbi in his profession, spoke about his doctoral thesis which just recently he handed in to the university's review board and was pending a verdict from them. The thesis, which I won't discuss at length here for a number of reasons, the main being that it's still pending a verdict from the board (and the others being that for the most part, it's not Tanach-related), focused on the Mishmarot Kehunah of the Second Temple Era and later. The Mishmarot Kehunah were the divisions of priests that served at set times year-round. Each division served for about two weeks every year and everyone served together on Chol Hamo'ed. Now, I came up to him after the lecture and asked him a question on one aspect of his theory: Per his theory, the four priestly families that came during Shivat Tzion and recreated the pr...