Achaemenids religious policy according to the inscriptions

Inscriptions are one of the most important historical references that are vital to the study of ancient history. Not only with studying inscriptions helps us directly understand very important historical point, but also we can challenge existing doubts and prejudices. According to historical linguistics, there are different subjects: political, military, social, cultural and economical subjects and also the changes in the regulations. While the most important subject in the Achaemenids inscriptions which can be surveyed in the side of religious scopes, such as monotheism and religious negligence upon the beliefs of the followers. At the other side it contains moral values such as truthfulness, honesty, gratefulness and freedom. These values all show the peaceful religious policy of the Achaemenids kings and also show their lawful positions. Undoubtedly, the most amount of the Achaemenids inscriptions are related to Darius the Great (BC 521-486) and the most special epigraph among all is the Bistoon inscription which is so important in the historical researches. By studying these inscriptions we can not only understand the historical points of the era but also to a considerable degree the religious policy of the Achaemenids. In this essay, with the great inspection of the Achaemenids inscription, it has been made efforts to find out how the religious policy and the legal position of the Achaemenids king were gained at the period.