The Isaka people live in the far northwestern corner of Papua New Guinea, near the border with Indonesia, within Sandaun (West Sepik) Province. Their language, Isaka (also known in some literature as Krisa), belongs to the Sko family, a small and distinctive group of Papuan languages spoken along the border region. Linguistic surveys describe Isaka as having features typical of Sko languages, including complex verb morphology and patterns of tone or stress that differ from neighboring language families. Historically, Isaka communities have maintained close ties with nearby Sko speaking groups through marriage, trade, and shared riverine routes. Their settlement patterns reflect long-standing relationships with the forested lowlands and foothills that shape their subsistence and mobility.
Isaka speakers live in small villages and hamlets where daily life centers on gardening, hunting, and gathering. Families cultivate taro, bananas, sago, and other crops suited to the humid lowland environment. Hunting and forest gathering provide additional food sources, and seasonal rhythms influence work patterns. Social life is organized around extended kin groups, with elders guiding land decisions, conflict resolution, and ceremonial responsibilities. Footpaths and river routes connect Isaka communities with neighboring groups, enabling exchange, marriage ties, and shared events. Tok Pisin is used for communication beyond the village, while Isaka remains central to home life, storytelling, and cultural expression. Access to education and healthcare varies widely, with some families traveling long distances to reach schools or clinics. Traditional song, dance, and oral narratives continue to play an important role in cultural identity and intergenerational knowledge.
Christianity is the predominant religious influence among Isaka communities, shaped by mission activity and church presence in the border region. Churches provide structure for weekly gatherings, teaching, and community decision making. While Christian practice is widespread, cultural values tied to kinship, land, and reverence for ancestral spirits remain deeply embedded in social life. These values influence their daily lives. Earlier customary practices are described in regional accounts, but contemporary religious life is centered primarily around church communities and Christian teaching.
Isaka communities share needs common to remote areas of Sandaun Province: improved access to primary and secondary education, consistent healthcare, and infrastructure that supports travel to service centers. Seasonal flooding and difficult terrain can isolate villages, making transport and communication challenging. Language preservation is an ongoing concern as younger generations increasingly use Tok Pisin in school and regional interaction. Community led literacy efforts and cultural programs help maintain Isaka language and knowledge. Sustainable management of forest and garden resources is important for long term food security and economic resilience. Strengthening local leadership, market access, and culturally grounded development initiatives would support community well being.
Pray for Isaka believers to grow in maturity, to be guided by the Holy Spirit in their families, and to be good and accurate influences of Christ to their friends and relatives as they serve as Christian workers.
Pray for improved access to healthcare and for strengthened support for families facing medical challenges.
Pray for expanded educational opportunities for children and youth, and for those in government leadership to make wise and just decisions that benefit remote communities.
Pray for the preservation of the Isaka language and cultural knowledge, and for the sustainable care of their environment and natural resources.
Scripture Prayers for the Krisa, Isaka in Papua New Guinea.
Ethnologue — Isaka language profile. Glottolog — Isaka (Krisa) classification and bibliographic resources. OLAC — Isaka language documentation listings. Wikipedia — Isaka language overview.
| Profile Source: Joshua Project |
