An was depicted as a bull. Look out!
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According to the Sumerians, An was the sky god and symbolized heaven. In fact his name means "sky". Sumerians lived in Mesopotamia, in the region of which corresponds to the valleys of Tigris and Euphrates rivers. Today, Mesopotamia is part of the states of Iraq and Kuwait.

An was depicted as a bull whose bellowing was thunder. The wife of An was Ki, the Earth. From their union were created the trees and other vegetation.

An presided over the assembly of the gods. This court had the ultimate power to judge and punish the misdeeds of gods and mortals. Sumerians believed that the assembled gods designated the Sumerian kings, who had to perform the duties and rites established by An. The gods used to meet in the forecourt of Enlil's temple in the city of Nippur. There they would enjoy a rich banquet provided by the temple attendants before discussing any issue.

The gods were supposed to vow that they would abide by the assembly's decisions. The decisions of the assembled gods were severely carried out without any discrimination. An example of the assembly's rigor is the banishment to the underworld of An's son, Enlil for having raped and impregnated the grain goddess Ninlil, who gave birth to the moon god, Sin.

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