Missionaries came to
Sumba in the late 1800s. The dominant Christian church in this region is the
Evangelical Christian Church in Timor or the
Gereja Masehi Injili di Timor. Sumba was a mission place assigned to the
Reformed churches. After
World War II missionary SPJ Goossens was suspended by the Gereja Zwolle of their position but some churches remained loyal to him. A schism occurred. Later this are become a mission field of the
Reformed Churches in the Netherlands (Liberated). An existing congregations joined this effort. Gereja Zwoolle become the
Gereja-Gereja Reformasi di Indonesia or the
Reformed Churches of Indonesia in NTT in 1975. Sister church relation with the Reformed Churches in the Netherlands (Liberated) was established. The Reformed Church in Indonesia in Papua (GGRI-Papua) is also a result of the missionary effort of the Reformed Churches (Liberated) in 1956 as the most extensive evangelisation work in
Indonesia. The first baptism took place in 1967 and the first converts were young people. In 1976 the first
Classis were formed. The denomination was founded in 1988 when the first
General assembly was formed. Currently there are 8,000 members, 17 organised congregations, and 21 church plant in the process of becoming official full status congregations and 3 Classes. Most congregations located in the isolated interior part of
Papua Province. It has about 15 pastors, 8 candidate pastors and 30 evangelists. The Papua church has a Theological College in
Boma. The Reformed Church in Indonesia in Kalbar (GGRI-Kalbar) begun in 1948, was also a mission of the
Reformed Churches in the Netherlands (Liberated). Between 1960 and 1993 8 local congregations were established. Later the GGI-Kalbar hag 19 churches, growing into 3 Classes and outreaches to more 15 places and 3,000 members. It has also a theological institute. These three churches held a joint National Synod meeting in 2011. The church currently has almost 5,000 members and more than 14 congregations and 40 house fellowships. == Doctrine ==