Allen R. Moore preaches about the need for more efficient and dedicated preachers in the church, emphasizing the divine call to the ministry and the importance of faithful men who are able to teach others. He addresses the challenges faced by both churches without preachers and preachers without churches, highlighting the need for a better method to bring them together. Moore discusses the qualities a preacher should possess, focusing on faithfulness, teaching ability, and true manhood, rather than external attributes like wealth or eloquence.