... In fact, these terminologies have tended to slide around quite a bit depending on who was using them and how; and nowhere is this lack of precision more evident than in Josephus’ own works...
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Let us now apply this idea of terminological confusions between “Pharisees” and “Essenes” to several other examples. In The Antiquities, Josephus tells us about one “Sadduk a Pharisee” — obviously “Zadok”, itself a contradiction in terms and by which he clearly means “Sadduk a Purist Essene” or, as we shall see, “Sadduk a Zealot”, a Leader of those he accuses of “Innovation” (i.e., “Revolution”) and who, along with Judas the Galilean (also c. 4 BC-7 CE) the son of that that “Hezekiah” mentioned above as being executed by Herod. Both of these are Founders of Josephus’ so-called “Fourth Philosophy”, a “Philosophy”, as just intimated, one must designate simply as “Zealot” or “Sicarii”, though Josephus never uses these actual terms until much later in his works (and which I would also designate “Messianic”)...