This essay is about the religious change that Jing-cult underwent 600-1500 A.D. It is a historical-critical essay based on literature studies, using Håkan Rydving’s theory of religious change. In chronological order, it will go through the religious change from ancient Japan to the late Muromachi-period when Shinto was created. It describes the early temple- cult, buddhism's mission to Japan and how the Jingikan was created. Further, it addresses the changes that occurred with the immigration from Korea and the consequences involved in the creation of the great temple-shrine complex in which Shinto and buddhism fused. Finally, it tells how the theological thinking of Japanese buddhism and the Jingi-cult changed and created Shinto. The essay has the main focus on the Kami-tradition, the shrine-tradition and the study of Shinto. The essay discusses the changes that occurred in the end and draw conclusions about why they occurred. The conclusion reached is that buddhism has had a great influence and changed the Jingi-cult most. In history there has come about akultration between buddhism and the Jingi-cult that eventually resulted in the creation of Shinto.