Several themes run through my book, Preaching the Gospel. One is that the Bible is God's word and we should believe God and use the Bible as our primary source for doctrine rather than the traditions we were raised in. Another is that there is a need more than ever to get the message of the Bible to the world.
Those are probably the two most important themes in the book.
The first part of the book explains how to prove that the Bible is the inspired word of God, what the true gospel is, and what prophecy predicts for the United States. The second half of the book explains why it is more important than ever to preach the gospel to the world and the Ezekiel warning to the United States. The second half of the book also offers suggestions for preaching the true gospel effectively.
This book was originally published around March 2006 and has gone through several updates. It is in the public domain, so it is free in electronic form and can be freely emailed, copied, or printed.