David and Rosemary Harley have served together as missionaries in Europe, Africa and Asia. After ministering in an English parish, they worked among Falasha Jews, one of the poorest and most disadvantaged communities in Africa. On return to the UK, they spent fifteen years at All Nations Christian College, UK, where David served as principal for eight years. This was followed by several years with Crosslinks and the World Evangelical Fellowship, serving as mission training consultants. David wassubsequently invited to become the General Director of OMF International, which entailed not only leading one of the largest mission agencies inthe world, but also travelling extensively throughout East and South East Asia. Together they have amassed a huge amount of experience of how to do mission well and encourage others to do it well too.