The Explanation of the Origin of Evil Based on Gahan

Gahan,considered as foundation  of Zoroastrianism and due to its attribution to Zoroaster, is the most important and oldest text of Avesta. On the other hand ,the idea of choosing between good and evil is the main theme of Zoroastrian religion .Based on these two central issues and by exploring the works of prominent researches ,the present article seeks to offer its solution in explaning the origin of evil from the perspective of Gahan and their classification and analysis؛the solution which relies on re-reading are re-considering the Gahan chapters .This solution has two areas:The first area relates to Gahan itself and is that we don’t concider Gahan as a theological text, but rather accept it as a text which has a moral nature,while researches have considered it as a theological text .The second area relates to reconsideration and revision of the nature of evil in Zoroasrianism.Accordingly, instead of accepting an existential nature for evil,we consider it non-existent,although in works and writings related to evil and its origion,the existential nature of evil is clearly  emphasized.