1, where the meaning of the date " thirtieth year " is obscure; it cannot refer to his age (which would be otherwise expressed in Hebrew), or to the reform of Josiah, 621 (which is not elsewhere employed as an epoch); possibly the reference is to the era of Nabopolassar (626 according to the Canon of Ptolemy), if chronological inexactness be supposed (34 or 33 years instead of 30), a supposition not at all improbable.
A Chaldean prince, Nabopolassar, set himself up in Babylonia, and Assyria was compelled to invoke the aid of the Askuza.
The newly formed Chaldean power at once recognized in Necho a dangerous rival and Nabopolassar sent his son Nebuchadrezzar, who overthrew the Egyptian forces at Carchemish (605).
Nabopolassar was followed by his son Nebuchadrezzar II., whose reign of 43 years made Babylon once more the mistress of the civilized world.
Nineveh, according to Herodotus, was besieged by Cyaxares and the Medes but saved by Madyes and the Scythians some twenty or more years before the Medes in alliance with Nabopolassar, king of Babylon, finally took it, c. 606 B.C. Much conjecture has been lavished upon the varying accounts which have reached us of the capture, but it seems probable that a heavy flood or the besiegers burst the great dam and while thus emptying the moats launched a flood against the west wall on the inside and thus breached the defences.