This past week, I posted a book notice about Doug Coleman’s fine new book, A Theological Analysis of the Insider’s Movement. Because the book notice prompted some vigorous discussion, I thought it might be helpful to post an excerpt from an essay I am writing on theological method. In the essay, I try to show how significant one’s theological method is for ministry and mission in general. In the excerpted portion, below, I try to show how a healthy theological method could help correct some of the missteps of IM proponents.
“In recent days, missiologists and missionaries have become aware of ‘Insider Movements,’ which represent a new phenomenon and a new strategy in Muslim evangelism. Insider Movements (IM) are movements within the Muslim world in which Muslim background believers choose to remain within Islam as a means of reaching Muslims. Some of them acknowledge Christ as their Savior only privately. IM proponents argue that this type of contextualization allows the convert to overcome significant barriers in order to incarnate like Jesus and Paul. Further, they argue that Christ does not require a convert to change his cultural identity or religion, and that the convert is free to reinterpret passages of the Qur’an so that he doesn’t have to renounce it as a whole. In addition, many IM proponents seem to see Islam as similar to OT Judaism and therefore not inherently opposed to the gospel.
We believe that IM strategy is fundamentally flawed for various reasons, but for now we will seek to show why theological method matters in adjudicating this issue. As we see it, the fundamental methodological flaw in many IM advocate’s strategy is their starting point-the existential reality of a Muslim background believer. IM proponents appear to begin with the lived existential tensions of being a convert in a Muslim context. In such environments, there are many barriers, including the strong aversion to “changing religions,” which is tantamount in those cultures to changing ones ethnic, national, and familial identity. Further these environments are also persecution-heavy, a convert faces the very real possibility of losing his job and family and perhaps even his life. Proceeding from such a difficult starting point, some IM proponents find a way to those converts. In order to do so, some IM proponents hold to an overly privatized and reductionist view of salvation in which a person gives mental assent to Christ as Savior, but does not fully embrace or implement the doctrines of repentance and Lordship. Second, some IM proponents do not recognize the importance of the redeemed community for the working out of one’s salvation (although others, such as Kevin Higgins, strongly emphasize the role of believing communities meeting together separate from the mosque for the purpose of Christian community and discipleship). Third many IM advocates misunderstand Islam, which exists as a religion custom-built to subvert and overthrow Trinitarian Christianity. Its Aryan Jesus and its doctrines of tawhid and shirk make clear that the worst possible sin for a Muslim is to believe in the Christian doctrines of Trinity and Incarnation. In sum, these three doctrinal missteps occurred in part because of a flawed theological starting point-the existential reality of Muslim converts.
We argue that if IM proponents began with the entire canon of Scripture as their starting point, and took into account what can be learned from church history, they would arrive at a different conclusion while still caring deeply for, and being sensitive to, the existential burdens and challenges facing converts in a Muslim context. In taking into account the entire biblical teaching, we respond to the first misstep by offering the biblical teaching concerning Christ’s Lordship (Col. 1:13-23) and the necessity of human repentance (2 Pet 3:9; Lk 14:25-33). Indeed, believers in any global religious context must turn their backs on false saviors; they must repudiate tribal gods and witch doctors; they must reject their belief that the Qur’an is God’s revelation and that Muhammad is his prophet; they must cease to worship in spirit temples and ancestral shrines; they must turn their back on the worship of sex, money, power, and other metaphorical idols. This is a fundamental tenet of Christianity. We respond to the second misstep by offering a robust ecclesiology in which we are not only saved from our sins, but are saved for discipleship in the context of the believing community, a community that clearly distinguishes itself from other communities of worship. Indeed, God’s church is a sign of the kingdom and an instrument of the kingdom in a way that individual converts never can be (especially if those converts are still identifying themselves as Muslims and attending mosque services). The body of Christ, working together, bears robust and powerful witness to Christ. We respond to the third misstep by offering the biblical teaching on idolatry (Rom 1:14-32), in which Islam must be viewed as idolatrous and antithetical to Trinitarian Christianity and to the doctrines of grace.
One should note that the persecuted believers of the New Testament faced a similar situation in which they worshiped in the midst of rival religions. In particular, they found themselves in direct opposition to the cult of Caesar. Instead of blending in with the cult, they found appropriate ways to make clear their allegiance to Christ. They baptized, gathered together for worship, and refused to recognize Caesar as a god. Theirs was a faith which was forged the midst of strong Christian churches which clearly distinguished themselves from rival religious communities, such as the cult of Caesar. Although the (commendable) aim of IM proponents is to help new converts maintain familial and communal connections, IM unintentionally undermines the role of the church in nurturing faith, building community, and bearing witness to the kingdom, and it undermines the robust nature of the doctrine of salvation, which includes Lordship, repentance, and discipleship.
In summary, a healthy theological method recognizes the entire biblical canon and brings its full teaching to bear on any situation; further it allows the canon to be provide the framework and parameters in which we craft our ministry strategies, methods, and literature, rather than allowing a lived existential scenario to provide the framework and parameters.”
 For an exemplary biblical-theological assessment of the issues surrounding Insider Movements, see Doug Coleman, A Theological Analysis of the Insider Movement Paradigm from Four Perspectives: Theology of Religions, Revelation, Soteriology, and Ecclesiology, in the EMS Dissertation Series (WICU, 2011).
 For two insider descriptions of IM, see Kevin Higgins, “The Key to Insider Movements: The ‘Devoted’s’ of Acts,” IJFM 21 (Winter 2004): 155, and Rebecca Lewis, “Promoting Movements to Christ within Natural Communities,” IJFM 24 (Summer 2007): 75. IM advocates note that some IM believers have indeed been killed for their bold witness.