Spring 2017: Help Us Help Others!: we provide research, analysis, and resources to help the missions community reach the unreached. If each reader donated just $10, we could meet our our operations budget through the summer. Will you be one who helps? Donate here.

Movements are essentially all about "speed of doubling."

No matter where you are in the world, no matter who you are working among, no matter how many believers you have, it will typically not take more than 17 "doublings" of the Christian population to saturate most districts.

20 to 25 doubles would suffice for nearly any province. 32 doubles would see the entire world Christian--even if you are starting with just one person.