by Justin Long
For a very long time, now, many missiologists have tended to measure ‘progress in the Great Commission’ (however that was defined) to some extent in the context of people groups, and how they are reached, evangelized, and/or Christianized.

‘Reaching the unreached peoples’ in particular tended to replace the idea of ‘a church in every country’ as the operative definition of closure or fulfillment of the Great Commission. Unreached people groups better fit the scriptural concepts of ‘every tribe, language, nation, tongue before the Throne’ (Revelation 7:9).

Behind the development of the unreached peoples concept was the idea of ‘gaps’–that there were languages and ethnic groups which had ‘no access’ (defined as the lack of reasonable access of individuals in the group to the gospel within their lifetime). This was due principally to barriers of language (they couldn’t understand the language of what was being shared) or ethnicity (they couldn’t accept what was being shared by outsiders).

However, as we have refined our strategies for closure into ‘reach the unreached’ strategies, two additional issues have emerged which we are struggling to address.

The first, which I have touched on elsewhere and will touch on only lightly here, is the danger of under engagement. The principle is simple: we love lists, we want to check items off, and so we do what is immediately required to put in a ‘good faith effort’ to remove a people group from the list. We adopt a people group, mobilize a team, and send them off to the group, and so remove them from the ‘unreached’ list.

This is exactly what would have to happen with a ‘sufficient’ engagement–but it’s also what can happen with an ‘insufficient’ engagement, and we don’t always take the time to ask whether an engagement is sufficient or not.

The second issue, however, is the one to focus on here: urbanization. At the turn of the 20th century, the world was just 14.4% urban. The majority of these urbanites (69%) were Christians, because most cities were in Christianized countries. Just 5 megacities (population over 1 million) were majority non-Christian.

The situation has vastly changed. Shortly past 2000, the world became majority urban. Today, about 56% of the global population lives in a city–4.4 billion out of 7.8 billion. 

Further, as far back as the 60s and 70s, there was a shift in the religious composition of urbanites: there were more non-Christian city-dwellers than Christians as cities developed in the non-Christian world. Today, just one-third of the world’s city dwellers are Christians. This doesn’t mean cities make people into non-Christians; it just means that non-Christians urbanized into their own cities. There are over 593 majority non-Christian megacities now.

Cities present a specific challenge to the idea of ‘reaching unreached people groups’: they are huge mixing grounds. Some cities are more ‘rural’ in character–various languages are segmented into mini-villages. Some cities are more ‘urban’ in character–with lots of different people all mixed together, using broadly spoken trade languages to communicate on the job and in the markets. Whichever is the case, focusing on a city carries different strategic issues than focusing on a single people group largely located in one province or set of provinces. It brings the cross-cultural and cross-language part of the task to bear in multiple ways earlier on in the local evangelistic task.

This means that including ‘cities’ as segments to be listed, focused on, described, researched, documented, tracked, measured, and strategically engaged is probably just as important as ‘unreached people groups.’

We don’t want to lose our ‘unreached peoples’ focus. But we must remember: people passionately advocated for the unreached out of concern for gaps–collections of individuals who did not have access. An exclusive focus on unreached people groups could in fact lead us to focus on, for example, Kazakhs, to the exclusion of very small groups (e.g. the thousand or so Avar in Kazakhstan), or diaspora groups in the same cities (e.g. Buryats).

Not every gap can be tracked at the global level. But global lists could continue to identify where gaps are potentially located. Different kinds of gaps can be found in cities than amongst unreached groups, and that means we need to give cities a similar kind of mental effort.

This article was first published in Mission Frontiers and was edited with permission.