The past several decades have seen a seemingly endless obsession with trying to discover strategies to help denominations and congregations become more effective or successful. Consistent with the DNA of denominationalism, these strategies are usually defined with respect to carrying out the purpose of the church. To put it simply, in attempting to renew the church, you can’t get there from there. It is essential to probe deeper beyond the mere attempt to reclaim the purposive intent of the church.

The argument I am proposing is that the denominational, organizational church has focused more on matters of polity than on ecclesiology. This ends up making the operational ecclesiology of the denominational church more functional, or instrumental, in character. In contrast, the missional church conversation has reintroduced a discussion about the very nature of the church, its essence.

This conversation no longer understands “being missionary” primarily in functional terms, as something the church does, as is the case for the denominational, organizational church; instead, it understands “being missionary” in terms of something the church is, as something that is related to its nature. This represents a change of kind in the conversation about the church where ecclesiology is, once more, front and center.

Craig Van Gelder in “The Missional Church & Denominations”