Chuck Smith explores Isaiah 33:14, emphasizing the consuming and purifying nature of God as fire. He illustrates how the fierce Assyrian army surrounded Jerusalem, yet God's deliverance was evident when the enemy was defeated overnight. The sermon highlights the fear that grips sinners and hypocrites in Zion when confronted with God's holiness and power. Smith challenges listeners to reflect on their relationship with God, recognizing that fleeing from His presence is impossible and that His fire can either purify or consume. Ultimately, he urges the congregation to consider what God's fire is doing in their lives.