18:23 He went over the country of Galatia and Phrygia - It is supposed, spending about four years therein, including the time he stayed at Ephesus.

Acts 18:23 Parallel Commentaries

Jewish Homes
It may be safely asserted, that the grand distinction, which divided all mankind into Jews and Gentiles, was not only religious, but also social. However near the cities of the heathen to those of Israel, however frequent and close the intercourse between the two parties, no one could have entered a Jewish town or village without feeling, so to speak, in quite another world. The aspect of the streets, the building and arrangement of the houses, the municipal and religious rule, the manners and customs …
Alfred Edersheim—Sketches of Jewish Social Life

Corinth
During the first century of the Christian Era, Corinth was one of the leading cities, not only of Greece, but of the world. Greeks, Jews, and Romans, with travelers from every land, thronged its streets, eagerly intent on business and pleasure. A great commercial center, situated within easy access of all parts of the Roman Empire, it was an important place in which to establish memorials for God and His truth. Among the Jews who had taken up their residence in Corinth were Aquila and Priscilla, …
Ellen Gould White—The Acts of the Apostles

Apollos at Corinth
After leaving Corinth, Paul's next scene of labor was Ephesus. He was on his way to Jerusalem to attend an approaching festival, and his stay at Ephesus was necessarily brief. He reasoned with the Jews in the synagogue, and so favorable was the impression made upon them that they entreated him to continue his labors among them. His plan to visit Jerusalem prevented him from tarrying then, but he promised to return to them, "if God will." Aquila and Priscilla had accompanied him to Ephesus, and he …
Ellen Gould White—The Acts of the Apostles