In short, we cannot produce a gospel movement without the providential work of the Holy Spirit. A movement is an ecosystem that is empowered and blessed by God’s Spirit

When a church or a church network begins to grow rapidly in a city, it is only natural for the people within the ministry to feel that God is making a difference in that place. Often, however, what is really going on is “Christian reconfiguration.” When churches grow, they typically do so by drawing believers out of less vital churches. This can be a good thing if the Christians in these growing churches are being better discipled and if their gifts are being effectively deployed. Nevertheless, if this is the key dynamic, then the overall body of Christ in the city is not growing; it is simply reconfiguring. Reaching an entire city, then, takes more than having some effective churches in it, or even having a burst of revival energy and new converts. Changing the city with the gospel takes a movement.

When a gospel city movement occurs, the whole body of Christ grows faster than the population so that the percentage of Christians in the city rises. We call this a movement because it consists of an energy that extends across multiple denominations and networks. It does not reside in a single church or set of leaders or in any particular command center, and its forward motion does not depend on any one organization. It is organic and self-propagating, the result of a set of forces that interact, support, sustain, and stimulate one another. We can also call it a gospel ecosystem. Just as a biological ecosystem is made of interdependent organisms, systems, and natural forces, a gospel ecosystem is made of interdependent organizations, individuals, ideas, and spiritual and human forces. When all the elements of an ecosystem are in place and in balance, the entire system produces health and growth as a whole for the elements themselves.

Can we produce a gospel city movement? No. A movement is the result of two sets of factors. Take for example, a garden. A garden flourishes because of the skill and diligence of the gardener and the condition of the soil and the weather. The first set of factors—gardening—is the way we humanly contribute to the movement. This encompasses a self-sustaining, naturally growing set of ministries and networks, which we will look at in more detail below.

But the second set of factors in a movement—the conditions—belong completely to God. He can open individual hearts (“soil”) to the Word (“seed”) in any numbers he sovereignly chooses. And he can also open a culture to the gospel as a whole (“weather”). How does God do this? Sometimes he brings about a crisis of belief within the dominant culture. Two of the great Christian movements—the early church of the second and third centuries and the church in China in the twentieth and twentieth first centuries—were stimulated by crisis of confidence within their societies. The belief in the gods of Rome—and belief in orthodox Marxism in China—began falling apart as plausible worldviews. There was broad disaffection toward the older “faiths” among the population at large. This combination of cultural crisis and popular disillusionment with old ways of belief can supercharge a Christian movement and lift it to greater heights than it can reach in a culture that is indifferent (rather than hostile) to Christians. There can also be catastrophes that lead people of a culture to look to spiritual resources, as when the Japanese domination of Korea after 1905 became a context for the large number of conversions to Christianity that began around that time.

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