Dr. Albert Mohler is one of my favorite authors. I appreciate his desire to be biblical and to confront secular society with the gospel message.
Mohler has recently penned several books. I just completed reading his new text concerning preaching. He Is Not Silent is a call to preachers to confront our postmodern society with the truths set forth in the bible.
Mohler focuses on the need for expository preaching, the importance of doctrine in preaching, and the challenges of preaching to the postmodern mindset. At the same time, Mohler sounds a clarion call to today's preachers to have the courage and fortitude to preach biblically and keep preaching biblically.
This text is not a "how-to" text for expository preaching. Instead, it is designed to be a wake-up call to preachers and teachers about the need for the proclamation of the clear gospel message in the midst of a society that is confused about religion and spirtuality.
If you have never read a book discussing preaching/teaching as it relates to the current postmodern mindset, then I encourage you to read this book. It is fairly short (about 170 pages) and easy to read. If you have read other texts which focus on the importance of expository preaching, then don't bother with this one.