What is genuine church growth? Is it, at heart, the numerical growth of regular congregations or are there other dimensions and, if so, what are they? How can we learn from other contexts in order to properly inform our understanding of what we mean by church growth? Mara is one of the most marginalised regions in Tanzania, which in turn is a country in the most marginalised continent on the planet, and yet, Spencer argues, the church in the region has exhibited remarkable growth. Looking beyond the usual dimensions of church growth discourse, Stephen Spencer weaves in his own experience in Tanzania, finding in that wholly different context an approach to church growth which might entirely change the discourse in the global north.