Cities over 10 million

I have generally advocated for the need for one mission team for every 100,000 people. I do this because in my experience, the median size of a rapidly multiplying movement is 100,000 - after this, they tend to spawn new movements (often counted as streams within a movement family).

I have come to think of the role of a high-level catalyst as being a person thinking about strategy for a 10 million person population. Only two or three of the very largest movements have ever gotten that large. Regardless of what strategy is used (and I still think movements are the most likely to reach such sizes), if we can’t saturate a 10 million population segment, it would be hard to see the task in any sense finished.

In a world of 2 billion or so unevangelized (3 billion unreached) people, there are 200 to 300 such segments. This then calls for 200 to 300 10M catalysts / thinkers.

This cannot be only UPG thinking. consider the following 32 cities are all over or very nearly over the 10 million population mark:

1. Chongqing
2. Shanghai
3. Beijing
4. Chengdu
5. Karachi
6. Guangzhou
7. Shenzhen
8. Delhi
9. Istanbul
10. Kinshasa
11. Tianjin
12. Tokyo
13. Moscow
14. Lahore
15. Suzhou
16. Mumbai
17. Wuhan
18. Sao Paulo
19. Xi’an
20. Hangzhou
21. Harbin
22. Dongguan
23. Dhaka
24. Jakarta
25. Qingdao
26. Cairo
27. Seoul
28. Foshan
29. Nanjing
30. Mexico City
31. Jinan
32. Tehran

Some of these obviously already have substantial Christian presence and/or engagement. Others, far less. For many of these, % Christian is well below 10% - for some, below 2%. What would it take for these cities to reach, say, 32% Christian? What would be the impact? What would be the cost?