The heart of this book is the claim that the one church catholic comprises all who, on the ground of Christ's saving work, are called and gathered by God the Holy Spirit into a fellowship whose only Head is Christ himself; and that all thus called are granted the high privilege of sharing in a variety of ways in the one ministry of Christ. This is the vision of the Reformed churches past and present. Alan Sell argues that far from being a parochial enquiry, the nature of the ministry and the work and education of all the ministers are issues as relevant to the life and practice of particular local churches as they are to ecumenical discussions between the several Christian world communions.