This was the main religion of the Steppe Turkish communities. This system of beliefs did not have any relation with any other tribes in the period of antiquity. Tangri (God) was included in the centre of this religious order as the highest Supreme Being. The Creator had been omnipotent. At the same time, it had the "celestial" qualities and it was mostly called with the name of "Gok-Tanri" (Sky-God). Since the conception of the Sky-God did not have any relation with the earth, the researchers have generally approved that its origin should be based on the Asian steppe lands.


source: Mavi Boncuk