The necessary context of prophetic preaching, Walter Brueggemann argues, is a contestation between narratives. The dominant narrative of our time promotes self-sufficiency at the national level (through militarism) and the personal level (through consumerism). Opposed to it is a countervailing narrative of a world claimed by a God who is gracious, uncompromising - and real. In previous work Brueggemann has pointed us again and again to the indispensability of imagination. Here he writes for those who bear responsibility for regular proclamation in communities of faith, describing the discipline of a prophetic imagination that is unflinchingly realistic and unwaveringly candid.