In a world where temptation is subtle and spiritual battles are often unseen, Discipleship and Spiritual Warfare draws wisdom from C. S. Lewis's The Screwtape Letters to equip believers for the fight of faith. With clarity, insight, and pastoral warmth, Thiago Silva uncovers the enemy's tactics—distraction, pride, isolation, and despair—and reveals how ordinary moments become battlegrounds for the soul. But this is not a book about fear; it is a call to faithful formation. Through biblical truth and rich theological reflection, Silva shows that discipleship is itself spiritual warfare, and that growing in Christ means learning to resist, stand firm, and walk in grace. This book invites readers to open their eyes to the spiritual war around them—and more importantly, to the victory of Christ that empowers them to endure.