journeys. On his second journey his visit was brief. After engaging in a discussion in the synagogue, St. Paul left Ephesus, leaving Priscilla and Aquila in the city, and promised to return (Acts 18:18-20). Paul returned to Ephesus during his third journey.This time he spent a considerable length of time in Ephesus. (Acts 19:8-10 says Paul spent two years teaching and preaching in the hall of Tyrannus in Ephesus, after having spent three months teaching in the synagogue there. Acts 20:31 says he spent three years in Ephesus.)