Philippi was a Greek city situated along the Egnatian Way, which was a major east-west route across Greece. Many Romans settled there in the first century, and Philippi was the first European city in which Paul preached. In Acts 16, Paul heals a slave girl possessed with a spirit of divination, and her owners have Paul and Silas beaten and placed in prison. The Philippian jailer becomes a Christian after an earthquake occurs during the night, and Paul and Silas are released. In Paul's letter to Christians in Philippi, he acknowledges that the congregation there supported his ministry and remained close to him.