The introduction of Salafi Islam to the island by the new Muslim monarchs was not always peaceful however, Javanese nobles and peasants who rejected the new rulers were either conquered or fled to neighboring Bali where they contributed heavily to the Balinese Hindu religion and culture. Some Hindus who remained in Java retreated themself to more remote area such as Tenger near the Mount Bromo to avoid proselytization. During the Islamization of Java, Sunan Kalijaga was one of the which was active in promoting a more moderate form of Islam in Java, he was later appointed as advisor in the new Mataram Sultanate.