The "spirit" of heaven became Ana of Erech, the Sky-god; the "spirit" of earth passed into El-lil of Nippur; and the "spirit" of the deep into Ea of Eridu.

The change was hastened by contact with the Semite.

The Semite brought with him a new religious conception.

He believed in a god who revealed himself in the sun, and whom he addressed as Baal or "Lord." By the side of Baal stood his colourless reflection, the goddess Baalath, who owed her existence partly to the feminine gender possessed by the Semitic languages, partly to the analogy of the human family.

But the Baalim were as multitudinous as their worshippers and the high-places whereon they were adored; there was little difficulty, therefore, in identifying the gods and "spirits" of Sumer with the local Baals of the Semitic creed.
El-lil became Bel of Nippur, Asari or Merodach Bel of Babylon.