Vedic Period
The Vedic Period (c.1500–c.500 BCE)
There have been two major theories about the early development of early south Asian traditions.
- The Aryan migration thesis that the Indus Valley groups calling themselves 'Aryans' (noble ones) migrated into the sub-continent and became the dominant cultural force. Hinduism, on this view, derives from their religion recorded in the Veda along with elements of the indigenous traditions they encountered.
- The cultural transformation thesis that Aryan culture is a development of the Indus Valley culture. On this view there were no Aryan migrations (or invasion) and the Indus valley culture was an Aryan or vedic culture.
There are two sources of knowledge about this ancient period - language and archaeology - and we can make two comments about them. Firstly, the language of vedic culture was vedic Sanskrit, which is related to other languages in the Indo-European language group. This suggests that Indo-European speakers had a common linguistic origin known by scholars as Proto-Indo-European.

Page of the Rig Veda in Sanskrit: early 19th century Indian manuscript ©
Secondly, there does seem to be archaeological continuity in the subcontinent from the Neolithic period. The history of this period is therefore complex. One of the key problems is that no horse remains have been found in the Indus Valley but in the Veda the horse sacrifice is central. The debate is ongoing.
Vedic religion
If we take 'Vedic Period' to refer to the period when the Vedas were composed, we can say that early vedic religion centred around the sacrifice and sharing the sacrificial meal with each other and with the many gods (devas). The term 'sacrifice' (homa, yajna) is not confined to offering animals but refers more widely to any offering into the sacred fire (such as milk and clarified butter).
Some of the vedic rituals were very elaborate and continue to the present day. Sacrifice was offered to different vedic gods (devas) who lived in different realms of a hierarchical universe divided into three broad realms: earth, atmosphere and sky.
Earth contains the plant god Soma, the fire god Agni, and the god of priestly power, Brhaspati. The Atmosphere contains the warrior Indra, the wind Vayu, the storm gods or Maruts and the terrible Rudra. The Sky contains the sky god Dyaus (from the same root as Zeus), the Lord of cosmic law (or rta) Varuna, his friend the god of night Mitra, the nourisher Pushan, and the pervader Vishnu.