I am an individualist and so the idea that evangelism is based in the witness of the community is hard for me to come to terms with. However, Stone argues well, and his use of Alasdair MacIntyre's concept of virtue for what and how individuals and communities need to live and evangelize is exemplary.
Indeed, using MacIntyre's theory of virtue makes this book for me. That we Christians are to live as Christians through the practice of our faith, which makes us more virtuous as Christians; and that it is the practice that is the reward itself, nothing else, is 100% in line with my own theology--we do not believe in God or live good lives for the reward of heaven, or any other reward, we believe in God and live good lives because it is joyous to do so, and practicing our faith for the sake of the practice increases our joy in God. Evangelism is a natural outpouring of such virtue. That makes sense.
If nothing else, this book will get you thinking about what evangelism really is. For centuries we have labored with a misguided concept. After reading this, that almost certainly cannot be the case.