Philippians is known as the epistle of joy, yet Paul likely wrote it during one of his periods of imprisonment in Rome. How was he able to focus on joy in the midst of such a trial? In Philippians 1:3-8, he explains the impact a Gospel-centered outlook should have on our lives. The Impact of a Gospel-Centered Outlook, Part 1 1. Persistent Thankful Prayer (vs 3-4) 2. Persevering Gospel Progress (vs 5-6)