This is the second volume of collected lectures by presenters of the Annual Tinsley Lecture at Morling College edited by the director of the Tinsley Institute, Michael Frost. The Tinsley Lecture was established in 1999 to provide a forum for Australian and international scholars to literally "speak of mission" in ways that encourage fresh and innovative responses to the challenges facing the church globally today. This volume includes presentations reflecting on such diverse cultural challenges as post-Christendom, new global culture and climate change. Other presenters tackle the challenges posed by Western suburbia, urban poverty and the loss of a meaningful sense of neighbourhood. Yet others explore the nature of religious conversion and the grand missional narrative found in Scripture. In doing so, they reveal the breadth of thinking being undertaken by missiologists and missional practitioners today.