In David Webb's sermon "I Am Not Afraid" from the series "Defender," he explores the contrast between fear and faith using biblical texts like 2 Timothy 3 and Psalm 91. He emphasizes the importance of trusting in God's protection rather than relying on the safety of the world. He challenges listeners to be fearless warriors, declaring their trust in God and rejecting fear in the face of life's battles. Ultimately, the sermon encourages a deepened reliance on God's provision and a bold, unwavering faith despite the dangers and fears of the world.