Protestant Church in Western Indonesia

The Protestant Church in Western Indonesia (Indonesian: Gereja Protestan di Indonesia bagian Barat, abbreviated as GPIB) is a Reformed Church, and its theology is based on the teaching of John Calvin. It was established on 31 October 1948. It was called the "De Protestantse Kerk in Westelijk Indonesie", founded in 1605 in Ambon, Moluccas. In its formative years it consisted of seven classes: Jabar, Java, Jatim, Sumatra, Bangka, Borneo, Sulawesi.^[1][2] It is a member of the World Communion of Reformed Churches the World Council of Churches and the Christian Conference in Asia.^[3]