Pastor Robb Gossen's sermon "Refined By Fire" in the series "Forging Faith" uses the analogy of forging metal to explain how trials refine our faith. By referencing the TV show "Forged in Fire," he illustrates how trials shape us like metals into stronger faith. The main Bible passage, 1 Peter 1:7, emphasizes the testing of our faith through trials. The sermon emphasizes the importance of developing patience, endurance, and ministry through trials for spiritual growth.