His House is called Garo Demana , the House of Heavenly Song. It is believed that Creation took place in two phases. The first phase was the creation of the Menog , or Spiritual world. The Holy Spirit which emanates from Ahura Mazda is called Spenta Mainyu . It is wholly good, bounteous, compassionate and creative, while the spirit that emanates from Ahriman is Angrey Mainyu , which is wholly wicked, cruel and destructive.
Man is the only creation with intelligence.
He has the choice to progress emotionally and spiritually and choose Ahura Mazda , or become base and choose Evil. If he chooses rightly, he plays a part in protecting the good creations. In the Pahlavi texts of the Bundahishin , the creation of the Amesha Spentas is likened to the lighting of many torches with an original first torch. Through His Holy Spirit, Spenta Mainyu , Ahura Mazda created the Menog world by first evoking and actualizing the spiritual and highly ethical aspects and components of Himself. These Zarathushtra calls the Holy Immortals, the Amesha Spentas .