 The string orchestra is augmented by timpani, 2 trumpets, mandolino, 4 theorbos, 5 lyra viols (viols), 1 viola d'amore, 2 recorders, 2 chalumeaux (soprano), 2 oboes, organ.The Assyrian king Nebuchadnezzar sends an army against Israel to demand overdue tributes.Under the leadership of the general Holofernes, the Assyrians lay siege to the town of Bethulia and are about to conquer it.