If Bel-Marduk, “father of the gods,” reigned supreme in his temple opposite the royal palace, he was not without rival. Older than the “Lofty House” of Bel rose the venerable _ziggurat_ “_E-Zida_,” the “Eternal House” of Nabu of Borsippa, “god of wisdom.” Time was when Nabu had been the guardian god of all Babylonia, and his priests still refused to yield to the supplanting Bel more than a nominal concession of supremacy. Unlike the great city sanctuary, this temple in the quiet southern suburb sprang out of a great grove of nodding shade trees, girded about with pleasant gardens. A sluggish canal crept under the shadow of the terraces of the sacred tower, and mirrored the rambling brick buildings and leaf-hung walks of the temple college. For here at Borsippa was the most famous, as well as the oldest, university in all the fair land of the Chaldees. From time immemorial students had listened here to lectures on astrology, the science of omens, and the interpretation of dreams. Vainly had Avil-Marduk striven to raise his own temple-school to an equality with that of Borsippa. Were not these paths beside the canal hallowed by three thousand years of academic tradition? Had not every famous demon-caster, for more generations than could be told, learned his art under the shadow of this _ziggurat_? Then again, while Bel was fanatical, Nabu was tolerant. Avil moved heaven and earth to ruin the Hebrews, while Imbi-Ilu, pontiff of Borsippa, was Daniel’s bosom friend, and his under priests openly declared that they hated Bel-Marduk quite as much as they did Jehovah. Of late the coldness between the two pontiffs had almost turned to open hostility; the king and court paid homage to Marduk, the city at large sent most of their gifts to Nabu. And within recent days Imbi-Ilu had more than once given offence even to the king by harbouring inside the temple precinct persons whose arrest had been urgently commanded; Belshazzar had fumed, and muttered threats, but Imbi was obdurate. There was the law,—graven on two stone tablets, by King Sargon I., a potentate three thousand years departed,—denouncing curses upon the body, goods, kinsfolk, and soul of the man or king who should dare to molest a suppliant that had once passed the boundary stones, which were set one furlong on every side of the enclosure of Nabu. The king had raged, but was helpless; not even the “son of Bel-Marduk,” as he boasted himself, could abolish a privilege like that. But on the afternoon in question, none would have dreamed that aught save studious repose brooded over quiet Borsippa. The lectures were ended. The boys in the lower school had flung away the tablets on which they had been copying the old dead language of the Akkadian classics.[3] Teachers and pupils had wandered forth to enjoy the cool of the evening. From the crest of the great temple-tower drifted the chant of the litany to Nabu:—