Opening Paragraph For nearly fifty years the Aladura or ‘prayer’ churches have been a prominent feature of the Nigerian scene. Their drumming and singing can nowadays be heard at almost any time of day or night in most of the larger southern Nigerian towns. Their prophets and pastors exert a guiding influence on the lives of an everlarger proportion of the population. And recently they have even been credited with an important part in bringing rebel resistance to an end in the Nigerian civil war. Similar churches, usually labelled ‘Zionist’, have been described and analysed by sociologists, social anthropologists, and comparative religionists working in many African countries. Hitherto, however, no full-length sociological monograph on the subject has appeared from Nigeria. So John Peel's Aladura , a full-length study of two of these churches in Yorubaland, meets a long-standing need.