Exponential multiplication is only possible when
new churches are being started by the churches themselves rather than by
professional church planters or missionaries. Finally, they are
indigenous churches. This means they are
generated from within rather than from without. This is not to say that the gospel is able
to spring up intuitively within a people group. The gospel always enters a people group
from the outside; this is the task of the missionary. However, in a Church Planting
Movement the momentum quickly becomes indigenous so that the initiative and drive of the
movement comes from within the people group rather than from outsiders. The
resources are in the harvest!
Example:
Suppose you want to reach a people group of 6
million and have determined you need to start 5000 churches. One missionary can work for
40 years winning one person to Christ everyday, with a gain of 15,000 believers.
This would still leave you having to reach 5,985,000.
If 20 church planting teams each planted one new
church a year, it would take them 250 years to plant 5000 churches. Increase through
addition will not work.
Suppose you planted ONE church
that produces a new church every year, and the churches they start also produce a new
church every year. Then the picture looks much different.

-
Year 1 --
1 church
-
Year 3 --
4 churches
-
Year 5 --
16 churches
-
Year 7 --
64 churches
-
Year 9 --
256 churches
-
Year 11--
1024 churches
-
Year 13 -- 4096
churches
In a little over 13 years, it is possible to see
all 5000 churches started, compared to 250 years with 20 church planting teams. One
of the important keys is what kind of church you start to begin with. What
characterizes the kind of churches that expand so quickly, and what kind of soil do these
churches need to be planted in? Let's look at some answers to this question.
