cholars are able to piece together the earliest Indian religion only through archaeology, clues in the later texts, and by extrapolating from existing traditions.
Hindu literature, the Rig Veda, speaks often of “the Creator,” of “the One,” a Great God over all the other gods. He is called Varuna, and is closely related to the Zoroastrian god Ahura Mazdā (“Wise Lord”) and the Greek god Uranus (Ourania).
Though an insignificant sea god in the current pantheon, Varuna was a prominent god in the ancient system, and the subject of many hymns in the Rig Veda. Zwemer writes that Varuna is “the most impressive of the Vedic gods. He is the prehistoric Sky-god whose nature and attributes point to a very early monotheistic conception.
This god is an ethical god, capable of great wrath or merciful forgiveness of sins.
Similar are the cases with Indra (the god of clouds), Agni (the god of fire), and similar numerous gods in the Hindu pantheon.