F.B. Meyer emphasizes the vital role of our senses, both physical and spiritual, in discerning danger and preserving our spiritual health. He illustrates how the inner senses—such as the ear, eye, smell, taste, and touch—can be trained to detect good and evil, much like our physical senses warn us of danger. Meyer encourages believers to cultivate their spiritual senses to recognize temptation, avoid harmful influences, and maintain purity in their lives. He stresses that just as we train our physical senses, we must also exercise our spiritual faculties to remain attuned to God's guidance. Ultimately, the sermon calls for a heightened sensitivity to the Divine Spirit to navigate life's challenges effectively.