(44) When Ormuzd created the earth, Ahriman entered into its grosser elements. Whenever Ormuzd did a good deed, Ahriman placed the principle of evil within it. At last when Ormuzd created the human race, Ahriman became incarnate in the lower nature of man so that in each personality the Spirit of Good and the Spirit of Evil struggle for control. For 3,000 years Ormuzd ruled the celestial worlds with light and goodness. Then he created man. For another 3,000 years he ruled man with wisdom, and integrity. Then the power of Ahriman began, and the struggle for the soul of man continues through the next period of 3,000 years. During the fourth period of 3,000 years, the power of Ahriman will be destroyed. Good will return to the world again, evil and death will be vanquished, and at last the Spirit of Evil will bow humbly before the throne of Ormuzd. While Ormuzd and Ahriman are struggling for control of the human soul and for supremacy in Nature, Mithras, God of Intelligence, stands as mediator between the two. Many authors have noted the similarity between mercury and Mithras. As the chemical mercury acts as a solvent (according to alchemists), so Mithras seeks to harmonize the two celestial opposites.

(2) Aye, (that blessedness, which is the) best (creation) of this most bounteous spirit, Ahura Mazda will bring forth in action with words from the mouth and tongue of His Good Mind (within His seers), and by the two hands of Âramaiti (His Piety as she lives within the soul). And by such wise (beneficence is) He the father of the righteous Order (within our worship and our lives).

(1) And to this (man, His chosen saint), Ahura Mazda will give both the two (greatest gifts, His) Universal Weal and Immortality, by means of His bountiful Spirit, and with His Best Mind, from (the desire to maintain His) Righteous moral Order in word and deed, and by the (strength and wisdom) of His Sovereign Power, (established) in Piety (among His folk).

(10) Him in the Yasnas of our Piety we seek to praise with homage, who in His persistent energy was famed to be (in truth) the Lord Ahura Mazda, for He hath appointed in His kingdom, through His holy Order and His Good Mind, both Weal and Immortality, to grant the eternal mighty pair to this our land (and the creation).

(43) According to the Persians, there coexisted in eternity two principles. The first of these, Ahura-Mazda, or Ormuzd, was the Spirit of Good. From Ormuzd came forth a number of hierarchies of good and beautiful spirits (angels and archangels). The second of these eternally existing principles was called Ahriman. He was also a pure and beautiful spirit, but he later rebelled against Ormuzd, being jealous of his power. This did not occur, however, until after Ormuzd had created light, for previously Ahriman had not been conscious of the existence of Ormuzd. Because of his jealousy and rebellion, Ahriman became the Spirit of Evil. From himself he individualized a host of destructive creatures to injure Ormuzd.

(21) But Ahura Mazda will give both Universal Weal and Immortality in the fulness of His Righteous Order, and from himself as the head of Dominion (within His saints). And He will likewise give the Good Mind's vigorous might to him who in spirit and deeds is His friend , (and with faith fulfils his vows )