R. B. Edwards posited that the epistle to the Romans was written to Christians residing in the city of Rome citing Rom 1:7, Rom 1:15 as references. It is unclear how the church in Rome originally began. The best explanation is that the Romans who were present at Pentecost (Acts 2:10-11) eventually made their way back to Rome and started a church in one of the synagogues. It should not be surprising that there was already an established church before Paul?s arrival. People who may have heard the gospel in Asia, Greece, or elsewhere could have traveled to Rome. In Romans 16, Paul greets several people, with the most notable of these being Priscilla and Aquila. Both Aquila and Priscilla were in Rome until about AD 49 when Claudius expelled all the Jews from the city (Acts 18:2). Paul met the couple when he came to Corinth (ca. AD 51). They did further ministry in Ephesus (Acts 18:19) around AD 53. From there they went to Rome. It is likely that they were not the first ones to bring the gospel to Rome