No mention is made during this time of any collision between Assyria and her great rival. Babylon. The result of the wars waged by Asshur-ris-ilim against Nebuchadnezzar I., had, apparently, been to produce in the belligerents a feeling of mutual respect; and Tiglath-Pileser, in his earlier years, neither trespassed on the Babylonian territory in his aggressive raids, nor found himself called upon to meet and repel any invasion of his own dominions by his southern neighbors. Before the close of his reign, however, active hostilities broke out between the two powers. Either provoked by some border ravage or actuated simply by lust of conquest, Tiglath-Pileser marched his troops into Babylonia. For two consecutive years he wasted with fire and sword the “upper” or northern provinces, taking the cities of Kurri-Galzu--now Akkerkuf--Sippara of the Sun, and Sippara of Anunit (the Sepharvaim or “two Sipparas” of the Hebrews), and Hupa or Opis, on the Tigris; and finally capturing Babylon itself, which, strong as it was, proved unable to resist the invader. On his return be passed up the valley of the Euphrates, and took several cities from the Tsukhi. But here, it would seem that he suffered a reverse. Merodach-iddiu-akhi, his opponent, if he did not actually defeat his army, must, at any rate, have greatly harassed it on its retreat; for he captured an important part of its baggage. Indulging a superstition common in ancient times, Tiglath-Pileser had carried with him in his expedition certain images of gods, whose presence would, it was thought, secure victory to his arms. Merodach-iddiu akhi obtained possession of these idols, and succeeded in carrying them off to Babylon, where they were preserved for more than 400 years, and considered as mementoes of victory. The latter days of this great Assyrian prince were thus, unhappily, clouded by disaster. Neither he, nor his descendants, nor any Assyrian monarch for four centuries succeeded in recovering the lost idols, and replacing them in the shrines from which they were taken. A hostile and jealous spirit appears henceforth in the relations between Assyria and Babylon; we find no more intermarriages of the one royal house with the other; wars are frequent--almost constant--nearly every Assyrian monarch, whose history is known to us in any detail, conducting at least one expedition into Babylonia.