This book examines the theological foundations of a collaborative approach to Christian ministry. The discovery that Christians are members 'one of another' creates energy and joy in ministry and empowers the Church in an age of mission. Outlining the present challenges for ministry, Stephen Pickard offers an historical perspective on ministry over the last century; develops a theory of collaborative ministry based on a dialogue between theology and science; and, explores some implications of collaborative ministry for lay and ordained people of the Church. This book breaks new ground in its theory of collaborative ministry through a dialogue with the sciences of emergence. It also offers fresh insights on important texts in ministry; relationships between Christology, pneumatology and ministry; a relational ontology of ministry; and, episcopacy, ecumenism, ordination vows and wisdom for team ministry.