Keller began his workshop by referencing Alec Motyer’s observation that a preacher has two responsibilities: first, to the truth he proclaims, and second, to the people to whom he proclaims it. Books on preaching tend to focus on the first, neglecting the equally vital work of contextualization and application. This imbalance partly explains why much expository preaching fails to speak to the heart.
The biblical understanding of the heart is unique in human thought. Throughout history, humans have tended to pit the mind and the heart against one another: ancient cultures by elevating reason and virtue to squelch the emotions, and modern cultures by elevating self-expression as the highest goal. In the Bible, however, the heart is the seat of not just our emotions, but also our deepest trust. Preaching to the heart touches not just the emotions, but the entire person, including our thought and will.