Characteristics
In general, in the earliest text, the Rigveda, the Asura preside over moral and social phenomena. Among the Asura are Varuna, the guardian of Ṛtá, and Aryaman, the patron of marriages. Conversely, the Devas preside over natural phenomena. Among the Devas are the Ushas, whose name means "dawn", and Indra, the leader of the Devas. However, by the time that the Brahmana texts were written, the character of the Asura had become negative.
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