Interest in the concept of vocation is booming. Guidebooks promise to tell us how to find the perfect job. Work is becoming suffused with spiritual significance. Not just a source of meaning in one's life and a place of self-discovery and self-realisation, it now also offers us a chance to make the world a better place and to help fulfil God's Plan. What lies behind the new-found interest in vocation? How does it relate to Martin Luther's understanding...