In the past we have focused on the "why" of missions in terms of motives, the "what" of missions in terms of the content of the message, and the "how" of missions in terms of methodologies and strategies, but the "where" question, in terms of where we send cross-cultural workers, has simply been assumed; it has meant crossing a geographic boundary. In Apostolic Function in 21st Century Missions, Alan R. Johnson introduces the idea of apostolic function...