Batak Christian Protestant Church

The Huria Kristen Batak Protestan (HKBP), which translates into the Batak Christian Protestant Church, is the largest Protestant denomination in Indonesia, with a baptized membership of 4,178,256. Its present leader is the Ephorus (or Bishop) Rev. Dr. Bonar Napitupulu. It was founded in the 1880s by Dr. Ludwig Ingwer Nommensen, of the German Rhenish Missionary Society (RMG), who worked in the District of Tapanuli in Tarutung, North Sumatra.