1. While Apollos was at Corinth. It is probable that he remained there a considerable time. Paul, having passed through the upper coasts. The upper, or more elevated regions of Asia Minor. The writer refers here particularly to the provinces of Phrygia and Galatia, ch. 18:23. These regions were called upper, because they were situated on the high table-land in the interior of Asia Minor, while Ephesus was in the low maritime regions, and called the low country. Came to Ephesus. Agreeably to his promise,