Capill diagnoses that an issue with many brands of expository preaching is weak application to the lives of the hearers. He therefore provides a framework for preachers to preach more applicatory sermons, beginning with the living word of God first speaking to the life of the preacher, and out of that flows the sermon and its application (he calls this preaching "from a full reservoir"); having an insight into the lives of the hearers, faculties of their hearts (and being sensitive to appeal not only to the mind, but also to the conscience, will, and passions), and their spiritual conditions (this will require the preacher to know their hearers and the culture they are swimming in); and the "firing" of "arrows" including: anticipating and answering objections; providing motivations and incentives; being specific; pointed; and direct; and using illustrations for clarity and impact.
In the second half of the book, having laid down his framework, Capill goes into more detail. He puts forward a "kingdom" theology. This includes a wider view of sin (not just individual, but woven into societies and nations and the world as well), a wider view of the gospel (including feeding and giving to the poor and liberation from bondage), and a wider view of serving God (through a theology of vocation and work; and this means preaching to encourage hearers to adopt kingdom values in their trade and work, urging them to love their bosses, client, etc., and ultimately, do all for the glory of God). This gives rise to "living application". Additionally, Capill advocates for "Preaching the "ives"": indicatives (that assert things already done and/or present a certainty), imperatives (commands), and subjunctives (commands that include both the speaker and listeners). Capill observes that the first and third are often underutilised by preachers, but indicatives can actually help congregants enjoy God and His great and glorious work, which can lead to life giving application as people look away from themselves and rejoice in God. Subjunctives joins the preacher and his hearers and makes clear that they are part of the same community, under God, which introduces a different flavour to a sermon that otherwise only uses imperatives.
Overall, I really enjoyed Capill's book. It is certainly one that I see myself revisiting when I need to be reminded of how to craft applicatory segments for sermons or even studies.