However, even among Indonesians who regard themselves as followers of normative Islam, the notion of spirits and spirit possession may not be strange.Some Muslims reject the idea of spirit possession as delusion, but many others in Indonesia accept it as a real possibility.In fact, Islam teaches that Satan (the Devil) exists, so anyone who has personal troubles of whatever sort could be said to be afflicted with “a satan” (some unwanted supernatural power).For example, here we see a Muslim preacher healing spiritually possessed people with the power of the Qur’an (Koran).More often, in Indonesia only official religions like Islam, Buddhism, Hinduism, etc., are recognized as religions.Belief in local spirits, as is the case in Java, is simply termed “belief” rather than “religion,” so the same traditional beliefs can be found within any of the religions formally acknowledged in Indonesia (e.g. spirit beliefs in Islam, spirit beliefs in Roman Catholicism, spirit beliefs in Buddhism, etc., all similarly incorporating Javanese customs).For this reason, some ritual activities, such as worshiping an ancestor, may look similar in any religious context in Java, and can take place across religious affiliation.Sometimes Javanese people speak of “Agama Jawa” or “Kejawen” to refer to these local animistic beliefs that are rooted in the indigenous culture itself without being specific to Islam or Hinduism.