Lowell Streiker, a longtime expert on free church movements and cults, examines a vital and growing free church movement--an impressive movement that is yet largely unknown. Founded in Norway more than 90 years ago, it is a church without membership rolls, clergy, central administration, tithing, or even a name. Outsiders call them Smith's Friends after their founder, Johan Oscar Smith. On a worldwide basis, some 30,000 people participate in more than 200 churches in 50 countries.

As a phenomenologist of religion, Streiker attempts to be descriptive, analytic, and constructively...