There are systemic features of contemporary Christianity that create an almost
invisible class of non-believing clergy, ensnared in their ministries by a web of obligations, constraints, comforts, and community. … The authors anticipate that the discussion generated on the Web (at On Faith, the Newsweek/Washington Post website on religion, link) and on other websites will facilitate a larger study that will enable the insights of this pilot study to be clarified, modified, and expanded.
Daniel Dennett and Linda LaScola on Preachers who are not believers: