These reflections by a leading evangelical anthropologist reveal how insights from anthropology can help missionaries communicate biblical content without syncretism. This collection presents: (a) global trends that missionaries must understand in order to reach key groups; (b) anthropological grids that explain the epistemology and worldview of a target group and help in appropriately contextualizing the gospel; (c) first-hand insights on spiritual warfare and power encounters with other religions; (d) practical instruction on church planting with culturally appropriate principles for fostering indigenous growth. The author advocates a trialogie uniting theology, anthropology, and missions in the work of worldwide evangelism.