Vedism

Vedism is the religion of the ancient Indo-Aryans and was popular from 1500 B.C. to 500 B.C. It can also be seen as the origin of the modern Hindu belief system, as they share the same holy texts, the Four Vedas, but there are differences between the two. It was polytheistic in nature, with gods falling into two categories: Devas, gods of nature, and Asuras, gods of moral concepts. Oral hymns were extremely important to followers of Vedism and priests played a huge role in the various ceremonies, said to improve the lives of the followers by pleasing the gods. While Vedism did practice animal sacrifice, it was not very common. Milk and grain were used much more frequently.
Indra was the supreme god of Vedism, and one of the most popular myths was that of Indra and the children of Diti, the mother of demons. After Indra had killed most of her children, Diti began performing magic to help her last unborn son become more powerful than Indra. When he found out, Indra hurled a thunderbolt at her womb, destroying it, and the impact turned the unborn child into 49 lesser demons.