Most missionaries to Unreached People Groups work strategically with believers and churches in the responsive groups to help the believers there reach more of their people. There is always more to do in this never-ending task of helping Christ’s body grow where it already exists.
However one quarter of the world lives in Frontier People Groups (sixty percent of all Unreached People Groups)——where the seed of the gospel has not yet been established and the inhabitants of these groups have no chance of knowing a believer or hearing the good news about Jesus before they die.