Bill Nikides (Modern Reformation) discusses in a whole new approach to mission work, one that encourages Christian converts to continue as members of their old religion! (Yes, you read that right–and it is not a good approach):
The most explosive issue in global missions within the evangelical church today is something called “Insider Movements.” . . .
It has become a go-to option for all sorts of traditional evangelicals working with ostensibly reputable missions organizations such as Navigators, Frontiers, Summer Institute of Linguistics (a branch of Wycliffe), Global Partners for Development, and the International Mission Board of the Southern Baptist Convention. Some embrace the Insider Movement label and identity; others prefer to remain low key. In many cases entire organizations—while in others, only some individual members—are committed to its core principles. Even worse, it appears that some missionaries and agencies are guilty of dissembling so as to maintain plausible deniability. . . .
Here are a couple of stock definitions to get us on our way. Insider Movements (IM) are variously defined as “popular movements to Christ that bypass both formal and explicit expressions of Christian religion” (Kevin Higgins, “The Key to Insider Movements,” Internal Journal of Frontier Missiology, Winter 2004). Another definition Higgins offers is that they are “movements to Jesus that remain to varying degrees inside the social fabric of Islamic, Buddhist, Hindu, or other people groups.” In other words, as John Ridgeway of the Navigators relates, Insider Movements advocate “becoming faithful disciples of Jesus within the culture of their people group, including religious culture.”
Fundamentally, Insiders are those who profess faith in Christ but remain members of their original religious communities; Muslims remain Muslims, Hindus remain Hindus, and Buddhists remain Buddhists. In the Muslim world that means they must acknowledge one exclusive God, Allah, and that Mohammed is his final and greatest messenger. They remain members of the mosque, practice the five pillars of Islam, live openly in their cultures as Muslims, participate in Muslim sacrifices and feasts, and identify themselves as Muslims. In many cases, I’m familiar with baptized Christians who are persuaded to re-enter the mosque after renouncing their Christian identities. . . .
There are, of course, major problems with such an approach to missions and evangelism. First, Insiders make the unbiblical assumption that such biblical passages teach that true believers can have a purely inward faith that can be manifested inside any faith system, including that of other non-Christian religions.
Second, practitioners and Insider missiologists (or scholars of the theology of missions) ignore the fact that the Bible is loaded with texts, even entire books, devoted to distinguishing truth from error and true religion from false religion. In other words, doctrine matters and has to be central in our theology of missions. Unfortunately, doctrine is surprisingly absent from much Insider literature, and rarely do their proponents address the twin topics of idolatry and false religion. Instead, Insiders suppose that religions are relatively harmless cultural creations, that they are man-made and therefore disposable. Even Christian articles of faith, such as the church and the sacraments, can be said to be cultural creations that can simply be replaced with other things in Muslim cultures.
via Modern Reformation – Articles [subscription required].