The apostle Paul's letter to the Philippians is one of the Bible's most unique books. Some scholars call it "the epistle of joy" because the word "joy" or "rejoice" appear in it 16 times. Yet what is amazing is that this letter about Christian joy was written from a prison cell!
While Paul was under the watchful eye of Roman guards, bound in chains, he wrote some of the most uplifting spiritual words ever penned. In the letter's four short chapters the author continually exhorts us to praise God no matter how dark our circumstances are. He writes: "I will rejoice" (1:18, NASB), "I rejoice and share my joy with you all" (2:17), "I urge you, rejoice in the same way" (2:18), "Finally, my brethren, rejoice in the Lord" (3:1) and "Rejoice in the Lord always; again I will say, rejoice!" (4:4).