Tennent’s first chapter on megatrends that shape current mission is an excellent overview on the state of global Christianity, which is the context for theologizing and for all mission endeavors. He concisely summarizes the well-chronicled collapse of Western Christendom and the shift of the center of gravity from worldwide Christianity to the global south, exploring sometimes-ignored implications, such as the emergence of a “fourth branch” of Christian faith, outside the Catholic, Orthodox, and Protestant communities. He also explores implications of globalization for Christian faith that the typical “missions-minded” Western Christian is often unaware of, such as the impact of immigration and urbanization.
In chapters 2 and 3 Tennent lays the foundation for his Trinitarian missional theology. As the ultimate sender, God the Father is the source of the missio dei, and mission is an expression of His relational, holy love. God the Son is the embodiment of the missio dei, in the incarnation itself, but also in church history and in contemporary holistic mission, both of which are a reflection of the incarnation. God the Spirit is the empowering presence of the missio dei, both in dynamic missionary witness and in suffering and persecution.
The remainder of the book is a reflection of the content covered in a traditional introduction to world missions, but with each section introduced within a Trinitarian framework. In chapters 4–7 Tennent surveys biblical foundations for mission, presents an excellent biblical theology of culture, and introduces an evangelical theology of religions under the heading of God the Father as the source and goal of the mission. In chapters 8–13 Tennent overviews the history of mission, the challenge of cross-cultural communication, and the necessity of holistic mission, all under the heading of God the Son as the redemptive embodiment of mission. His examination of significant “turning points” in earlier mission history and his discussion of issues in church planting are original, refreshing approaches that even seasoned mission teachers and practitioners will appreciate. Chapters 14–16 discuss the Holy Spirit as the empowering presence