That book is an allegorical or symbolical representation of events in the early part of the rising of the Jews under Barcochba; Judith is Judaea, Nebuchadnezzar Trajan; Assyria stands for Syria, Nineveh for Antioch, Arphaxad for a Parthian king Arsaces, Ecbatana for Nisibis or perhaps Batnae; Bagoas is the eunuch- service in general; Holofernes is the Moor Lucius Quietus.