REACHING THE LEAST REACHED PEOPLE & LANGUAGE GROUPS
STATEMENT
Reaching the least reached people and language groups refers to churches sending missionaries to isolated communities with little or no access to the gospel and no established church in their own language, with the goal of making disciples who gather as healthy, indigenous, reproducing churches.
Work among the least reached is essential to fulfilling the Great Commission. Although it remains underprioritized, we affirm its importance and urgency. These contexts involve significant linguistic, cultural, geopolitical, and geographic barriers and require long-term investment in church planting and often Bible translation. Therefore, this mission demands careful preparation, a willingness to endure hardship, adaptability, and sustained commitment from missionaries and senders.
Missionaries in least-reached contexts still need the fellowship of a local church. Whenever possible, they should not go alone but join or work to establish a church as soon as possible, even if it begins with fellow missionaries. While maintaining their pioneering focus, they should also seek partnerships with nearby churches across cultures or language groups.
Article Written by A.W. WorkmanThe Elimbari
I grew up in Papua New Guinea in the early 2000s. Jim, an older man in the mission leadership, regularly took time to encourage my brothers and me. Since our dad had passed away on the mission field some years beforehand, this was an especially kind gesture. I didn’t really know who Jim was or much about his story, but I remember the words of encouragement, such as when he stopped me on the road to tell me how excited he was for me to go and join the first college cohort studying under John Piper and Tom Steller [1]. Later, when Jim learned that I was serving as a missionary in Central Asia, he sent me the foundational Bible lessons he had developed over many years. Although Jim was a pioneer in tribal language ministry, I noticed he produced them in the trade language I grew up speaking. I found that interesting because it suggested that wise missionaries should use whatever language is most effective for strengthening local churches. It was not until many years later that I would have the opportunity to learn Jim’s fuller story and hear more of his wisdom and faithfulness.
Back in 1971, after two years in Papua New Guinea, Jim and Kathy Tanner set their hearts on engaging the unreached Elimbari tribe with the gospel. The first four villages of this language group, one by one, refused to welcome Jim as a resident missionary. However, when Jim visited the fifth village, a respected elder announced that he would symbolically adopt Jim as his son, providing the breakthrough the Tanners needed to gain access and begin the long process of language and culture acquisition, teaching the Bible, planting a church, and translating the Bible.
And a long process it was. Jim describes the first few years as being like “one little shining match amongst a forest of darkness.” These years consisted of Jim living in the tribe five days a week while Kathy and the kids stayed at a mission station an hour’s walk away. The vast majority of this tribe, including all of the women, couldn’t speak Tok Pisin, the trade language the Tanners had recently acquired. No, effective ministry would need to take place in the tribal language. But no one had studied the Elimbari language or written it down, so Jim listened, learned, and recorded each word in the International Phonetic Alphabet, later developing the language’s first alphabet. He also studied the culture through countless questions, mistakes, and patient observations. And as he did, he became more able to understand the dark animistic worldview that held the Elimbari in bondage, and better able to communicate the gospel effectively.
After two and a half years of living in the village, the Tanners saw the first member of the tribe come to faith. Then, when the Tanners’ knowledge of the language and culture reached an advanced level, Jim and his team began teaching the Bible chronologically through stories, laying the foundation for a true understanding of the gospel. By 1985, fourteen years in, there was a local church of Elimbari believers who were born again and growing together in Christlikeness. Sadly, the newly translated New Testament produced by a partner organization proved unintelligible and unusable. So, Jim got to work redoing it. This Bible translation process took another decade.
After twenty-five years of laboring among the Elimbari, Jim and Kathy moved to another province so Jim could fill a leadership role in their organization. They left behind a clear and accurate New Testament translation and a thriving local church. During their next twenty-five years on the field, the Tanners continued to encourage and counsel the Elimbari believers from afar, even as they worked to help newer missionaries plant churches among other tribal groups.
The Least-Reached
Today, the Elimbari churches continue to thrive. But there are thousands [2] of least-reached people and language groups that, like the Elimbari in 1971, cannot yet hear and understand the gospel.
Least-reached peoples are those isolated communities with little or no access to the gospel and no established church in their own language [3]. These can be tribal people groups similar to the Elimbari in Papua New Guinea, cut off from gospel witness by a language barrier, harsh environments, and difficulty of access. Or they can be like the least-reached groups in the Zagros Mountains or the Caucasus, where a complex web of factors, including language, ethnicity, religion, and political barriers, has prevented Bible translation or the establishment of an indigenous church among them to date. These groups are unlikely to ever hear the gospel without churches and missionaries who adopt a Pauline focus, committed to preaching “not where Christ has already been named” (Rom 15:20).
Romans 10:17 says that faith comes through hearing. But what are we to do for language groups that cannot hear the gospel today because there is no preacher capable of proclaiming it in a language they can understand? Or people groups that cannot hear the gospel because no preacher has yet been able to access their area? Or those groups that are so isolated that they aren’t even on the radar of sending organizations? This kind of isolation from the gospel calls for recognition of its importance as well as its tragedy. It calls for urgency. Not the kind of urgency that leads to frantic efforts for engagement that fail to lay a good foundation. No, the kind of urgency that soberly prepares missionaries for decades of faithful labor to access and engage these least-reached groups.
The Cost
In an age when 99% of missions funding and 97% of missions personnel go to peoples and places with established indigenous churches, it is right to call out the under-prioritization of these least-reached people and language groups [4]. And it is right for sending churches and prospective missionaries to wrestle with the very real costs of reaching these groups. It will not be easy. These groups remain cut off from the gospel for a reason – they are exceptionally hard to reach. Many of these groups will require missionaries to learn two languages: a regional language and the people group’s own vernacular [5]. Often, instead of missionary visas, a significant investment in business or NGO work will be needed to gain access to these least-reached areas. And the degree of isolation will often mean that families committed to this kind of labor will face poor infrastructure for health, education, and spiritual care. I once had the privilege of being part of the very first team of missionaries to live in a dusty Iraqi city near the Iranian border, with good access to several least-reached minority people groups. I was only there for a month, helping an advance team of single men to lay the groundwork for what was supposed to become a long-term team. It was a difficult place to serve, brutally hot and ultra conservative in its brand of Islam. After 9 months, these men completed their commitment and moved back to the US. But the hopes for a long-term team never materialized, and no missionaries have lived there in the eighteen years since. I remember standing on the hill of the old Ottoman-era castle in this city, praying and looking out over the several hundred thousand who lived there, knowing that almost none had the chance to hear the gospel, either now or in the near future. To this day, there is no gospel witness in this city. To be honest, it would be very difficult for almost any foreign family to live and minister effectively there. But some must attempt it, and the Church must help them to do so.
Undertaking this type of work requires humble confidence that the gospel is the power of God for salvation for all peoples of the earth. When the gospel enters areas with no witness at all, missionary labor often appears to have failed before it succeeds. As with the Elimbari, progress may be measured over a lifetime instead of months or years. In 1969, David and Kathy Watters moved to Nepal to engage the mountain-dwelling Kham people. Several years later, after learning two languages and witnessing miraculous provision in the face of obstacles, the Watters endured yet another season of severe suffering. There was only one believer, and no gospel interest in the community. David reflects on that time, “The walls of Jericho weren’t crumbling… In fact, just the opposite was happening: we were crumbling. Where was God?” The Watters went home for furlough, expecting never to return: “We had already failed” [6].
John Paton, the Scottish missionary to the New Hebrides island of Tanna, lost his wife, child, and several coworkers in the first four years of ministry. He persevered through death threats and was finally rescued by a merchant ship from a murderous mob, leaving no witness on the island. Years later, he tells how he persevered: “In the darkest moment I never doubted that ultimately the victory there, as elsewhere, would be on the side of Jesus, believing that the whole Earth would yet be filled with the glory of the Lord” [7] (Hab 2:14). Paton lived to see a church thrive on Tanna and on the nearby island of Aniwa, where he ministered with his second wife. Likewise, the Watters describe being convicted through prayer that “there really is a tree of life whose leaves are for the healing of the nations!” [8] (Rev 22:2). Returning to Nepal, they translated the New Testament and eventually saw a mature Kham church endure steadfast through persecution.
In contexts like this, prospective missionaries and their sending churches must be prepared to endure hardship, confident that God intends for the gospel to bear fruit. They must maintain both a long-term, committed vision and an adaptable posture that enables them to keep engaging their focus group even if they lose residential access after a few years, a likely development for many of these locations. These least-reached people and language groups are not for missionaries or sending churches looking for a quick harvest or a fast return on investment. No, they are for those who, like the Tanners, are ready to make it their life’s work.
The Pitfalls and Opportunities
Missionaries in least-reached contexts still need the fellowship of a local church. This means that, whenever possible, missionaries should not go alone, but should join or establish a local church as soon as possible, even if it begins with fellow missionaries. The temptation for those working among the least-reached will be to put off local church commitment until after they have learned the necessary language(s) and culture, and to instead meet as a family or team for informal worship gatherings. But given the years required to do this culture and language acquisition well, and given the biblical centrality of the local church, this is not a healthy posture. Instead, missionaries should plan to go with enough of a team such that they can constitute a church together while they labor to see locals come to faith. William Carey and his team modeled this in Serampore back in 1800. And it is a model that frontier missionaries today would do well to emulate, whenever possible.
In some cases, there will be local churches in other languages that missionaries can join while they labor to reach their focus language or people group. Missionaries need to guard against the false dichotomy that says this kind of commitment to a local body will mean they won’t have enough time or focus to do what they’re sent to do. Instead, they should hold this local church commitment in faith, waiting and watching to see how God will turn this investment in his bride into a long-term strength for the work among the least-reached. It may be that God will raise co-laborers for the missionaries from these other national churches and that, together, they will be able to preach the gospel and plant churches more effectively.
One of the more isolated places I’ve ever visited was an example of this sort of composite team, where a Korean couple worked with a local family from a neighboring language group to church-plant among an unreached jungle tribe. Together, this team established a work that was one of the best examples of contextualization I’ve ever seen. Later, during periods when the Korean family needed to step out for medical reasons, their local partners stayed and continued the work. Today, there is an indigenous church among that remote mountain people group. In this way, rather than viewing national churches or believers from other language groups as a distraction or something that will prevent the work from taking root, missionaries should pursue partnership as a key part of a dogged, long-term commitment to reach the least-reached.
Churches and missionaries that commit to reaching the least-reached need to maintain a humble posture. Like Paul, they root their confidence in the straightforward gospel and the power of God as they patiently sound the drum of “Jesus Christ and him crucified” (1 Cor. 2:2). Rather than relying on specialized training, skills, or methods, faithful missionaries point new believers back to the gospel and the word of God in everything, trusting the Spirit’s guidance as they walk together in loving fellowship. They patiently correct, appealing to God’s word, rather than shortcutting the process of theological formation by teaching doctrine on their own authority.
They also display humility towards other missionaries. While this work is very difficult and calls for a significant long-term, risky investment, it is not to be held too rigidly or elevated as the standard for what ‘real’ missions is. Rather, work among the least-reached should be viewed as one key part of the Church’s broader missions effort, alongside ministry among majority-language groups, including theological education and international churches.
Yes, this work is urgently needed. It’s worthy of our attention. But only as one part of a broader spectrum of biblical missions can it be given the appropriate weight and emphasis. This is especially important in preparing missionaries for the messy realities of on-the-ground missions. Least-reached groups may turn out to be more bilingual than expected. They may already have unexpected access to gospel witness. Sometimes, Bible translation work has even remained siloed and unknown as teams and organizations make their plans. Those committed to reaching these groups don’t need to write them off when categories don’t line up as anticipated. Rather, they should adapt, roll up their sleeves, and get to work.
Though challenges abound, reaching the least reached is a glorious calling. One that, when done well, leads to the establishment of local churches among groups that today are entirely cut off from the light of the gospel. Faithful teams can learn multiple languages to ensure that the gospel is understood at the deepest level. Gospel-driven creativity can lead to long-term access even across the most stubborn of barriers. Trusting in God, missionaries and their sending churches can persevere for decades until a solid foundation is truly laid. And the centrality of the local church can be honored at every step of the process.
The Reward
“How beautiful are the feet of those who preach good news!” In Romans 10:13-15, Paul tells us that faith comes by hearing, and hearing by the preaching of God’s word, and preaching by a preacher sent by a church. And what is the result of all this? Beauty – now, and for eternity.
Yes, reaching the least-reached will be a costly and difficult task for Jesus’ Church. But when the day comes, when those who could not yet hear, do hear, understand, and believe, then beauty and glory will overflow. The beauty of the gospel breaks down one more stubborn barrier, battering down the gates of hell even more so that those so long held in Satan’s captivity might enter into the freedom and worship of King Jesus. Like the Elimbari, the Kham, and the Tannese, the worship of the local churches yet to be planted among the least reached will one day resound. One by one, the least reached peoples and languages of the world will be reached – and the beauty of the gospel will shine even more brightly.
footnotes
[1] This freshman year program would later become Bethlehem College.
[2] Variations in definitions, progress, or methodologies across sources render these figures approximate. Data from Wycliffe Bible Translators, “Statistics,” last modified March 3, 2026, https://wycliffe.org.uk/statistics; Bible Society, “Global Bible Data,” accessed March 18, 2026, https://progress.bible/products/data/.
[3] Language is one of the most important barriers perpetuating gospel isolation of least-reached groups. The category of 4th lane missions (see articles by Brooks Buser of Radius International) focuses on isolated unreached language groups, which is a helpful subcategory of this definition of Least-Reached in this GCC statement.
[4] Modern missiologists have termed this the “Great Imbalance.” This data and term is taken from an article by David Platt, “What Is the Great Imbalance?” Radical, June 27, 2023, https://radical.net/article/what-is-the-great-imbalance/.
[5] Claims of bilingualism in particular need to be assessed carefully. The ability to conduct marketplace or government business in a majority language does not mean a people group is fluent in that language for deeper, spiritual topics. Neither does use of a majority language mean that there are not significant majority/minority issues at play that might hinder the effective communication or ownership of a message.
[6] David Watters, At the Foot of the Snows. Seattle: Engage Faith Press, 2011 (p. 176, 180).
[7] John G. Paton, Missionary to the New Hebrides: An autobiography. Fearn, UK: Christian Focus, 2018 (p. 173).
[8] Watters, At the Foot of the Snows, p. 181.
