Andrew Murray emphasizes the dangers of knowledge that does not lead to genuine belief and action. He contrasts knowing with believing, doing, hearing, being, and living, illustrating that mere intellectual assent to spiritual truths is insufficient without heartfelt acceptance and application. Murray warns that knowledge can become a deceptive enemy if it does not transform our character and lead us to live out God's word. True understanding of God's teachings should result in a life that reflects His love and power, rather than just an accumulation of facts. The sermon calls for a deeper engagement with God's word that fosters true spiritual growth and character development.

Andrew Murray explores the paradox of individuals finding joy in knowledge they do not genuinely believe or live out. He emphasizes that while the pursuit of knowledge can be pleasurable and enlightening, it becomes dangerous in moral contexts where knowledge of duty exists without corresponding action. This disconnect leads to a blinding of the conscience and self-deception, where individuals feel satisfied with knowledge that ultimately condemns them. Murray stresses the importance of not just teaching but also training, ensuring that knowledge translates into action and character development.