William Burkitt on Acts 18:1

The foregoing chapter acquainted us with the small success which St. Paul found of his ministry at Athens: upon his preaching Jesus and the resurrection there, the philosophers and wise men mocked and derided him. If natural dispositions and abilities had fitted men for grace, we might have expected the greatest number of converts at Athens, where many were mockers, but very few believers.

Hereupon Paul leaves Athens, and goes to Corinth, a famous city in Achaia; where he meets with more encouragement and better success; for here he gathers a famous church, unto which he wrote two epistles, under the title of the First and Second Epistle to the Corinthians.