The other source and centre was Eridu on the Persian Gulf. Here the spirit of the water was worshipped, who in process of time passed into Ea, the god of the deep. But the deep was a channel for foreign culture and foreign ideas. Maritime trade brought the natives of Eridu into contact with the populations of other lands, and introduced new religious conceptions which intermingled with those of the Sumerians. Ea, the patron deity of Eridu, became the god of culture and light, who delighted in doing good to mankind and in bestowing upon them the gifts of civilization. In this he was aided by his son Asari, who was at once the interpreter of his will and the healer of men. His office was declared in the title that was given to him of the god “who benefits mankind.” Two strongly contrasted streams of religious influence thus flowed from Nippur in the north of Babylonia and from Eridu in the south. The one brought with it a belief in the powers of darkness and evil, in sorcery and magic, and a religion of fear; the other spoke of light and culture, of gods who poured blessings upon men and healed the diseases that afflicted them. Asari was addressed as “he who raises the dead to life,” and Ea was held to be the first legislator and creator of civilized society. How far the foreign influence which moulded the creed of Eridu was of Semitic origin it is impossible to say. Semitic influences, however, began to work upon Sumerian religion at a very early date. The Semite and the Sumerian intermingled with one another; at first the Semite received the elements of culture from his more civilized neighbor, but a time came when he began to give something in return. The result of this introduction of Semitic and Sumerian beliefs and ideas was the official religion of later Babylonia. The “spirits” who had ranked above the rest now became gods in the Semitic sense of the term. Mul-lil of Nippur became the Semitic Baal or Bel, the supreme lord of the world, who governs the world below as well as the world above. He it was who conferred empire over mankind upon his worshippers and whose ministers and angels were the spirits of popular belief. Ea wanted but little to become a true god; his name remained unchanged and his dominion extended to all waters whatever, wherever they might be. His son Asari passed into Merodach, the patron-deity of Babylon, who, when his city became the capital of Babylonia, took the place of Bel of Nippur as the supreme Bel. As in Greek mythology the younger Zeus dethroned his father, so in Babylonia the younger Bel of Babylonia dethroned the older Bel of Nippur.