This god, who, as we shall see, becomes most prominent in the developed form of Babylonian theology, does not occupy the place one should expect in the early Babylonian inscriptions. Ur-Bau erects a sanctuary to Ea, at Girsu. Another of the governors of Lagash calls himself, priest of Ea, describing the god as the "supreme councillor." From him, the king receives "wisdom."[41] A ruler, Rim-Sin, of the dynasty of Larsa, associates Ea with Bel, declaring that these "great gods" entrusted Uruk into his hands with the injunction to rebuild the city that had fallen in ruins. The ideograms, with which his name is written, En-ki, designate him as god of that 'which is below,'--the earth in the first place; but with a more precise differentiation of the functions of the great gods, Ea becomes the god of the waters of the deep. When this stage of belief is reached, Ea is frequently associated with Bel, who, it will be recalled, is the 'god of the lower region,' but who becomes the god of earth _par excellence_. When, therefore, Bel and Ea are invoked, it is equivalent, in modern parlance, to calling upon earth and water; and just as Bel is used to personify, as it were, the unification of the earthly forces, so Ea becomes, in a comprehensive sense, the watery deep. Ea and Bel assume therefore conspicuous proportions in the developed Babylonian cosmogony and theology. In the cosmogony, Bel is the creator and champion of mankind, and Ea is the subterranean deep which surrounds the earth, the source of wisdom and culture; in the theology, Ea and Bel are pictured in the relation of father and son, who, in concert, are appealed to, when misfortune or disease overtakes the sons of man; Ea, the father, being the personification of knowledge, and Bel, the practical activity that 'emanates from wisdom,' as Professor Sayce,[42] adopting the language of Gnosticism, aptly puts it; only that, as already suggested, Marduk assumes the role of the older Bel.