To the latest period of Babylonian history these two groups continue to receive official recognition.

Nebuchadnezzar II.[221] dedicates an altar, which he erects at the wall of the city of Babylon, to the Igigi and Anunnaki.

The altar is called a structure of 'joy and rejoicing,' and on the festival of Marduk, who is the 'lord of the Anunnaki and Igigi,' sacrifices were offered at this altar.

In the great temple of Marduk there was a fountain in which the gods and the Anunnaki, according to a Babylonian hymn, 'bathe their countenance'; and when to this notice it be added that another hymn praises them as the 'shining chiefs' of the ancient city of Eridu, it will be apparent that the conceptions attached to this group span the entire period of Babylonian-Assyrian history.
Besides the Igigi and Anunnaki there is still a third group of seven spirits, generally designated as the 'evil demons,' who represent the embodiment of all physical suffering to which man is subject.

They appear, however, only in the incantation texts, and we may, therefore, postpone their consideration until that subject is reached.