Thus ahura-daeva, deva-asura in Zoroastrian and in later Brahman theology are in their meanings diametrically opposed.
The most striking difference between Zoroaster's doctrine of God and the old religion of India lies in this, that while in the Avesta the evil spirits are called daeva (Modern Persian div), the Aryans of India, in common with the Italians, Celts and Letts, gave the name of deva to their good spirits, the spirits of light.
He purified it from the grossly sensual elements of daeva worship, and uplifted the idea of religion to a higher and purer sphere.
It is the religion of the settled grazier and the peasant, while the ruder daeva-cult holds its ground among the uncivilized nomadic tribes.
Ormazd will summon together all his powers for a final decisive struggle and break the power of evil for ever; by his help the faithful will achieve the victory over their detested enemies, the daeva worshippers, and render them impotent.