your church is too small 7
Chapter Ten: Sectarianism: Our Enemy
Although only a short chapter, this is a profoundly important section in John Armstrong’s your church is too small. Having followed John’s ministry since the early 1990s, I suspect that this chapter has been shaped in the crucible of his own trials and the Spirit’s continuing gracious work of transformation in his life. It’s worth buying the book just for this nine page chapter.
Our author contends that the underlying problem in our quest for unity is sectarianism, defined by Rex Koivisto in One Lord, One Faith: A Theology of Cross-Denominational Renewal as:
“…seeking unity in uniformity rather than unity in diversity and expecting other Christians to comply fully with my views before I can have genuine fellowship with them.”
Koivisto is again quoted:
“The church must have a degree of diversity along with its unity. But sectarianism provokes diversity without the requisite New Testament relational unity.”
You can feel the pain in John’s writing when he confesses, “I defended sectarianism for decades….” He acknowledges that he still struggles with spiritual pride but consciously develops “deep friendships with Roman Catholics and the Orthodox, as well as numerous brands of Protestants.”
John then explores the catalyst of sectarianism in the church: intellectual ideology. This section is really worth chewing on. I love systematic theology and lecture in theology from time to time. It can be very helpful but it has clear dangers. I see evidence of these dangers being actualised in some of the so-called ‘New Calvinists’ with large internet followings – a dogmaticism and biblical arrogance that so easily dismisses other Christians who do not hold to five-point Calvinism. John Armstrong comments:
“A vital, dynamic Christian faith is not given or received through theological systems. Theological systems can never be final because Chist, who is the truth, is the real object of faith…all theological truth claims must remain biblically contestable so the church remains truly open to the Spirit…Human systems of theology have a proper place in protecting and guiding the church. But when these systems become “the system of doctrine taught in the Holy Scriptures,” we run into serious problems.”
John then comments on the nature of Scripture itself:
“…Scripture is not so much a treatise on systematic theology as the unfolding story of a people – the people of God. God gave us multiple stories that are woven into one great story. But when we turn this macro-story into a “system of doctrine,” we begin to live as if getting right doctrine is the same as living right. The result will very often be loveless Christians and churches who believe they control the truth.”
The rhetorical question that struck me as I read this challenging chapter is: ‘Are our hearts filled with theological arguments or the love of Christ?’
It strikes me also that the very practical challenge for all ministers is teaching biblical truth and protecting the church, with a humility of heart that closes the path to destructive sectarianism.

Have you had the painful experience of being asked to take on a ministry task without adequate training? Christian leadership is demanding even if the leader has the necessary competencies. Without such competencies, it is daunting, resulting in many casualties – for the leader and those being led.
We’re thumbing our way through the recently published