Ephesians 6:10-13 — How does the devil operate against individuals in the church? It is important to know the wiles of the enemy to become better equipped in spiritual warfare against him. In this sermon on Ephesians 6:10–13 titled “Watchfulness,” Dr. Martyn Lloyd-Jones notes the absence of literature that recognizes the devil for what he does. He provides a couple examples from history that properly reveal the wiles of the devil, such as Pilgrim’s Progress by Paul Bunyan and Screwtape Letters by C.S. Lewis. Resources like these come alongside Scripture to help the Christian watch carefully. That being said, there is no substitute for consistent prayer rooted in Scripture and accompanied by self-examination. These essentials help defend the three main lines of attack: mind, experience, and behavior. The devil produces an error of imbalance somewhere in the three so that Christians either do too much or too little to recover. Dr. Lloyd-Jones draws out the dangers of over-emphasizing in these areas leading to intellectualism, emotionalism, or pragmatism. The solution that he offers his listeners for perfect balance comes from a true view of the gospel. Christians must submit to God’s way of delivering them wholly and completely, through mind, experience, and behavior.