Great little book! Although written in 1975, which make it seem dated to Americans with short memories (like myself), a good primer on a biblical theology of mission. Stott covers the topics of mission, evangelism, dialogue, salvation, and conversion, contrasting modern perspectives with Biblical teachings. Throughout, Stott maintains his famous focus on Jesus Christ, and the practical urgency of missions. Though it might take some effort to wade through the theological discussions and distinctions, there are lots of gems in this short book.