This describes some specific Christian communities active at the time of publication (1974) and their differences theologically. The final chapter is clear that to be biblical, the preaching of the Word is most important, and shouldn't be neglected in favor of social or political goals, or even the spontaneous testimonies of individuals, or other spiritual practices.

It felt a little disorganized at times and, of course, it's fifty years old at this point, so I believe many of the communities mentioned no longer exist. However, it was an interesting look at the various ways in which well-meaning people have strayed from biblical truth. ( )