David B. Ruderman, “Between Cross and Crescent: Jewish Civilization from Mohammed to Spinoza” (audio lectures, parts 1 & 2)

These lectures were okay, focusing as you would expect on Jewish history, mostly in Europe, during this time period; few insights into Christianity.  He notes that Judaism was not static/established but was evolving, just as Christianity was.  Also:  Old Testament is to New Testament as Old Testament written is to Old Testament oral (I don’t recall now if he said this directly, or if the lectures just prompted this notation by me).