synagogue and to the Greek intellectuals in the Areopagus. Paul continued from Athens to Corinth. Interval in Corinth Around 50–52 AD, Paul spent 18 months in Corinth. The reference in Acts to Proconsul Gallio helps ascertain this date (cf. Gallio Inscription). In Corinth, Paul met Priscilla and Aquila, who became faithful believers and helped Paul through his other missionary journeys. The couple followed Paul and his companions to Ephesus, and stayed there to start one of the strongest and most faithful churches at that time. In 52, departing from Corinth, Paul stopped at the nearby village of Cenchreae to have his hair cut off, because of a vow he had earlier taken. It is possible this was to be a final haircut prior to fulfilling his vow to become a Nazirite for a defined period of time. With Priscilla and Aquila, the missionaries then sailed to Ephesus and then Paul alone went on to Caesarea to greet the Church there. He then traveled north to Antioch, where he stayed for some time (, "perhaps about a year"), before leaving again on a third missionary journey. Some New Testament texts suggest that he also visited Jerusalem during this period for one of the Jewish feasts, possibly Pentecost. Textual critic Henry Alford and others consider the reference to a Jerusalem visit to be genuine and it accords with Acts 21:29, according to which Paul and Trophimus the Ephesian had previously been seen in Jerusalem. Third missionary journey According to Acts, Paul began his third missionary journey by traveling all around the region of Galatia and Phrygia to strengthen, teach and rebuke the believers. Paul then traveled to Ephesus, an important center of early Christianity, and stayed there for almost three years, probably working there as a tentmaker, as he had done when he stayed in Corinth. He is claimed to have performed numerous miracles, healing people and casting out demons, and he apparently organized missionary activity in other regions. Paul left Ephesus after an attack from a local silversmith resulted in a pro-Artemis riot involving most of the city. During his stay in Ephesus, Paul wrote four letters to the church in Corinth. The Jerusalem Bible suggests that the letter to the church in Philippi was also written from Ephesus. Paul went through Macedonia into Achaea and stayed in Greece, probably Corinth, for three months during 56–57 AD. Commentators generally agree that