Big Sepik in Papua New Guinea

Big Sepik
Send Joshua Project a photo
of this people group.
Send Joshua Project a map of this people group.
People Name: Big Sepik
Country: Papua New Guinea
10/40 Window: No
Population: 16,000
World Population: 16,000
Primary Language: Iatmul
Primary Religion: Christianity
Christian Adherents: 98.00 %
Evangelicals: 25.00 %
Scripture: New Testament
Ministry Resources: Yes
Jesus Film: No
Audio Recordings: Yes
People Cluster: New Guinea
Affinity Bloc: Pacific Islanders
Progress Level:

Introduction / History

The Big Sepik are a people associated with the middle reaches of the Sepik River in East Sepik Province of Papua New Guinea. Their communities are connected with the Iatmul language and culture, which are among the best-known traditions along the Sepik River. The river system has long shaped the history and identity of the people who live there, serving as the primary route for travel, communication, and trade between villages.

For generations the people of the Sepik River region have lived in close relationship with the waterways, forests, and wetlands that surround them. Villages are often located along the riverbanks or nearby channels, and cultural traditions, language, and social organization have developed around this river-centered way of life.

What Are Their Lives Like?

Daily life for the Big Sepik people is closely tied to the Sepik River and its surrounding environment. Families depend on fishing, gardening, and gathering natural resources to support their households. Canoes are an important part of transportation and trade, allowing people to move between villages and markets along the river.

Village communities are typically organized around extended families and clan relationships. Cooperation within the community is important for farming, building homes, and carrying out important gatherings. Gardens provide staple foods, while fishing and other river resources contribute to the daily diet.

Cultural life along the Sepik River is also known for artistic traditions, including wood carving and ceremonial objects that reflect the history and identity of the people. These traditions vary from village to village and are closely connected with community heritage and social life.

What Are Their Beliefs?

Most people among the Big Sepik identify with Christianity, and churches are present in many communities. Christian worship and teaching influence family life and provide opportunities for people to gather for prayer and fellowship.

In some areas, traditional ideas about spiritual forces or ancestral influence may still shape how certain events are interpreted. Within this setting, continued biblical teaching and discipleship are important so that believers grow in a clear understanding of the gospel and the saving work of Jesus Christ alone.

Portions of scripture and the New Testament are available in the Iatmul language spoken by the Big Sepik people, helping believers engage with God's Word in their own language.

What Are Their Needs?

The Big Sepik people benefit from continued discipleship that helps believers grow in their knowledge of Scripture and in faithful obedience to Christ. Local congregations are strengthened when pastors and church leaders receive training and encouragement for teaching the Bible clearly.

Access to Scripture and Christian teaching resources in the Iatmul language supports families and churches as they study and apply God's word. Developing younger leaders and strengthening Christian families will also help ensure that the church continues to grow in maturity and witness among the Big Sepik communities and beyond.

In addition, improvements in education, healthcare, and sustainable livelihoods can contribute to the well-being of families living along the Sepik River.

Prayer Points

Pray that Big Sepik believers will grow in spiritual maturity and develop a deep love for the word of God.
Pray for pastors and church leaders to be strengthened with wisdom and faithfulness as they shepherd their congregations.
Pray that families and young people will follow Jesus Christ wholeheartedly and build strong Christian homes.
Pray that the churches among the Big Sepik will remain united and active in sharing the gospel with other communities who don't know about Christ's glory, goodness, and power.

Text Source:   Joshua Project