Gongen

A gongen (権現^?), literally "incarnation", was believed to be the manifestation of a buddha in the form of an indigenous kami, an entity who had come to guide the people to salvation, during the era of shinbutsu-shūgō in premodern Japan. The words gonge (権化^?) and kegen (化現^?) are synonyms for gongen.Gongen shinkō (権現信仰^?) is the term for belief in the existence of gongen.

The gongen concept is the cornerstone of the honji suijaku theory, according to which Buddhist deities choose to appear to the Japanese as native kami in order to save them, which is based on the Mahayana Buddhist notion of upaya, "expedient means".

It is sometimes assumed that the word gongen derives from Tokugawa Ieyasu's posthumous name (Tōshō Daigongen). However, the term was created and started being used in the middle of the Heian period in an effort to harmonize Buddhism and indigenous religious practice in what is called shinbutsu-shūgō or "syncretism of kami and buddhas". At that time, the assumption that Japanese kami and buddhas were essentially the same evolved into a theory called honji suijaku (本地垂迹^?), which held that native kami were manifestations or avatars of buddhas, bodhisattvas and other Buddhist deities. The theory gradually spread around the country and the concept of gongen, a dual entity composed of a buddha and a kami, evolved.

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