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.
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.
The evil demon Asmodeus is the Persian Aeshma Daeva.