Church growth is doctrinally necessary
A theological basis for seeking numerical church growth is readily to hand in Scripture. But it is not quite so obvious when we turn to doctrine. Here the work of writers such as professors Alister McGrath and Ivor Davidson and of Bishop Graham Tomlin is immensely helpful. They point us to how the fundamental doctrines of Incarnation, Atonement, and Trinity call us to an extrovert faith, which seeks the growth and proliferation of communities that incarnate the gospel in every community.
Graham Tomlin argues that when we look at the Spirit, we see a God whose essence is sending:
Theologically speaking, mission and the consequent growth of the church begin with the begetting of the Son and the procession of the Spirit from the Father. It starts with the Trinitarian life of God before it ever involves the creation, let alone the human part of that creation.
In saying this, Tomlin commends the importance of a full-blooded pneumatology. But he is also alert to the way we can sometimes fall into an idolatrous assumption that the Spirit can be controlled by humans. Tomlin sees the tension in seeing the Holy Spirit as free from human control yet given freely by God as akin to the tension between seeing church growth as in the hands of God yet requiring committed human effort if it is to come to pass. For Tomlin, the practice invoking the Holy Spirit is the way of managing this tension. By asking continually for the Holy Spirit we have access to him, but our need to ask means we cannot ever control him.
Tomlin also stresses that suffering is intrinsic to such a ministry….