The Ngaju-Dayak tribes of southern Borneo still adhere to their traditional religion, even though Christian missionary work began there in 1835. Their traditional religion, agama kaharingan, is presently the only autochthonous religion in South East Asia that is officially recognized by the government. Their ritual texts have been written down and are embodied in a priest language (bahasa sangiang). Martin Baier has compiled terms and examples of this language and presents modern Ngaju and Indonesian equivalents of these, as well as a German translation.