The Holy Spirit chose this city for the first European converts and guided Paul and Silas to visit it. Lydia was the first of many believers. After Paul and Silas were illegally jailed and praised God in song from prison all evening, an earthquake freed them. The jailer was amazed that they didn't try to escape and inquired about his own salvation. He was told, "Believe in the Lord Jesus, and you will be saved." (See Acts 16)
Over a decade later Paul was again in prison, this time in Rome. From there he wrote to the Philippian congregation the most joyful letter in the New Testament.
[SGI 32]