ndansmith wrote:I would classify Josephus as "Hellenistic" rather than Koine as his Greek is a bit more refined than some of the Biblical authors.
Starting in the reign of Nero a number of educated Greeks decided that it was time to reanimate the language of Glorious Athens, spoken 4-5 centuries before, with the result that obscure pronoun forms and the optative wander zombie-like through prose of this period, sometimes in eccentric ways. In references this will be called "Atticism" and the intellectual period the "Second Sophistic."
While I was not able to find any reference clearly stating that Josephus was writing in an Atticist style, one book from the early 20th century did say his Greek was "pure" (i.e., Attic) and his style is several times compared to that of Plutarch, who is solidly Atticist (Lucian is probably the most famously Atticist author).
I once had a professor of Greek tell me that every new Greek author you read meant learning yet another Greek. I think this overstates the case a bit, but when speaking of the Greek of this period, it's not too far off. Even within the NT there is a wide range in the style of the Greek.
In any case "Hellenistic" Greek can be everything from the colloquial-inspired Koine of informal letters and some parts of the NT, to a rarified and somewhat artificial language based on Athenian Greek no one had spoken in some centuries.
Edit: I should say that there was more to the Second Sophistic than Atticism, but the two go together so tightly that references to one will usually discuss the other.