Last week I was on a call with a ministry that focused on mobilizing new missionaries. They do this as a service to long-term mission agencies. In the course of the conversation, I learned that the average age of a candidate that they place is 34 years old.
That’s old for a missionary candidate.
Church planting is a youthful endeavor. I am not talking about megachurches opening up satellite locations (is that church planting?). I am talking about planting new churches from scratch. When one throws in the cross-cultural component and language learning, it becomes an even bigger challenge to plant churches as you get older. It takes stamina, commitment, and it really helps if you don’t know what you are signing up for. A little naivety goes a long way in starting big, tough ventures like planting churches in cultures where there are none. This is not to say that older dogs can’t do new tricks. For the most part, though, missionaries are best sent young if the harder missionary tasks are in view.
Past mobilization eras featured student mobilization. The Student Volunteer Movement fueled a huge outburst of missionary mobilization. The post-World War II boom was even bigger. Tens of thousands used to flock to student missions conferences. The most recent era of mobilization, featuring the push toward unreached people groups, produced the largest evangelical missionary force we have ever known, with about 134,000 deployed just from the US. I, and my young family, were sent as a part of that last boom. I left my job in corporate computer consulting at 26. My candidate school was filled with people at the same age and stage of life as me. For most missionaries leaving in their mid-twenties, the process of deciding to become a missionary starts when they are students.
When I joined the US office of Pioneers, our mobilization efforts focused mostly on campuses. We traveled to Bible colleges, seminaries, and to secular schools with large ministries. I recall the mobilization director, Donnie Scearce, saying, “Yeah, we could find ‘em in other places, but this is shooting fish in a barrel.” Today, many agencies are skipping students altogether. Instead, they are focusing on church-centered mobilization. The language of mobilization itself has shifted to embrace this local church emphasis, and many will argue that this is healthier and more biblical. That might be true, but it is also a much longer process. Time will tell if this model yields new recruits at the levels we have seen in the past. I am skeptical. I also do not see this as a binary decision. We can mobilize from churches and we can mobilize students.
Why Missionaries Are Getting Older
Here are some suggested reasons for why missionary candidates are getting older. I think that these combine to make it unlikely that the system will change without concerted effort to get that age down - a goal I believe we need to have. These are not weighted in any particular order.
1. Life starts later
We are living an extra ten years. For better or for worse, it would appear that we are not living those extra years at the end of our life. Instead, we have a longer adolescence. Most candidates don’t want to go single (particularly men). Student debt, delayed career paths, and later marriage all factor into going into missions later in life, if at all. Overall, later adult life means older missionaries.
2. Mobilization still sounds like 1995
Many organizations that thrived recruiting in the 1980s through early 2000s still rely on the messaging and tools tuned to earlier generation. Gen Z and younger Millennials often experience those methods as marketing rather than invitation. Very few missionaries have, for example, moved into the influencer space.
Mission Nexus has done a lot of teaching on messaging for Gen Z. These can be summarized into authenticity, transparency, mental-health awareness, clear role definition, healthy teams, and sustainability, among others. We are working on an AI tool to assess agency messaging for Gen Z. I have, as I write this, a few dozen agency reports in front of me, and they are not hitting home runs on Gen Z.
3. The missionary vocation carries stigma
For roughly the last quarter century, anti-colonial and “decolonize missions” discourse has framed traditional missionary work as imperialistic or culturally invasive. Though Gen Z is not reporting this at the levels that Millennials did, this framing has hurt mobilization. It takes some maturity to understand how complicated this issue is in contemporary missions. I hope by now you have checked out our podcast, Polyphonic, Mission After Empire, on this topic.
4. The campus pipeline cracked
Christian colleges, universities, and Bible institutes have mostly deconstructed their missionary prep programs. Enrollment pressure and budget stress have hit many of those schools hard. Missions is frequently among the first things cut. The result is a chicken-and-egg problem: declining interest justifies the cut; the cut further reduces exposure and calling, reducing interest. There is also a general malaise among Christian schools generally, of course, with many outright shutting down. This larger trend affects missions mobilization.
5. Mainline mission structures aged out
Mainline Protestant agencies have been in multi-decade decline. In recent years several effectively shuttered traditional career missionary programs. PC(USA) World Mission’s near-elimination of mission co-worker roles is the obvious recent example. This is across the mainline denominations. That removes not only personnel but the institutional networks that once fed broader Protestant mobilization.
6. Megachurches redefined “missions” as local
The rise of the American megachurch prioritizes numerical growth, local influence, and congregational involvement. In that world, “missions” often means short-term trips, local outreach, or church-to-church partnerships instead of long-term pioneer work among unreached peoples. The church growth movement has affirmed the idea that the local church should focus on its own programs as a priority over ministries that were not affecting the unchurched around them, and the people in the pews.
Yes, there are exceptions. But not many.
7. When everything is mission, almost nothing is
Missio Dei language recovered something vital: mission begins in the triune God, not in human programs. But the expansion of that language has also produced definitions so broad that concrete vocational decision-making gets blurry. If everything is mission, the specific call to cross-cultural pioneer work loses urgency and clarity.
I plan to write more on missio Dei’s influence. I am realizing that while we talk a big missio Dei talk, in reality, those ministries that conduct global missions have largely ignored it. The point here is that we have lost a sense of urgency in our missiology.
8. Campus ministries weakened as feeders
Campus ministries once sent large numbers of students into short-term and long-term missions. Many now face retention pressure and cultural headwinds themselves. COVID-era cancellations disrupted the pipeline further, carving out a 3 - 4 year window, representing lost opportunity for mobilization. Reduced campus-based missions has downstream effects on appointment age.
9. Short-term missions exploded but did not result in growing the long-term force
In the late 1970s and early 1980s, many hoped short-term missions would multiply career missionaries. Participation exploded - particularly from local churches. Career numbers in many Western agencies did not. The pipeline effect was disappointing relative to the scale of investment.
Short term was used more as a service to local church members than it was as a means for field-based ministry. Millennials experienced a paternalistic version of missions, where church teams would go and do projects that were not missiologically smart. This revealed a model that was expensive relative to local alternatives, created dependency, and introduced a “white savior” dynamic. It is no wonder why people would get turned off to missions.
Long term agencies do short term differently, but at nowhere near the scale that churches send people on short-term trips. Overall, I think we should be disappointed that short term ministry has not produced long term results. Because short term is typically a student activity, this has contributed to a rising candidate age.
10. Evangelical fractures make mass calling harder
The Student Volunteer Movement once catalyzed a generation with a broad theology. One reason it declined sharply after the 1920s was the modernist–fundamentalist controversy, social-gospel shifts, and loss of consensus. Through the 70s up until COVID, Lausanne and others were rebuilding that central, simple evangelicalism. Now, evangelicalism is once again fracturing. There are overlapping fault lines across theological, political, missiological issues. Distinct camps of evangelicalism will struggle to collaborate at scale.
An example of this is the missions mobilization event called The Cross Conference which denies access to missions agencies that utilize disciple making movement strategies. This is not breaking fellowship over the essence of the gospel. What this does is make it more difficult for young people to hear about opportunities in which they may serve. It narrows the choices and reduces exposure over an issue that aligns tribally with a form of field strategy.
This kind of fracturing is a strategic mistake. Go stand in the center of a Muslim city, numbering in the millions, and ask yourself if these secondary issues are worth fighting about in light of the massive and overwhelming lostness around you. It is horizontal hostility.
Where to from here?
I think we should continue to lean into the 34 year olds. If that who is responding, that is who we should send.
At the same time, let’s look at the big picture. Stafford Beer, a British management consultant, coined the term “the purpose of a system is what it does.” He is positing that the outcomes we get are more important than the intentions we have. Our systems of mobilization are producing older candidates. Is this what we want? Can we rewire these systems and fuel a new student movement? Are we content to communicate a generation behind where young people are? Is this simply the reality we face based on the current cultural winds?
Feel free to comment if you think I missed a reason or have some ideas about this reality.
Excellent points, all. A big one for us is (#4) that Christian colleges are no longer big, natural feeders for us. Early on, a majority of our candidates were from Bible colleges or similar institutions. Now we rely on churches sending people to us directly and these tend to have more life experience. Also, the typical American is now 11 years older than in 1975. The population is aging.
Really helpful insights, thanks. I guess my question would be whether more younger workers is necessarily good. If the only aim is more workers these things hold. High numbers of young workers might have been sent in previous waves but was the work of lots of young people necessarily fruitful? Could less be more and more mature be longer lasting?