acts 19:1 And it came to pass, that, while Apollos was at Corinth, Paul having passed through the upper coasts came to Ephesus: and finding certain disciples, - Free Bible Online

      Ac 19:1-41. SIGNAL SUCCESS OF PAUL AT EPHESUS.

      1-3. while Apollos was at Corinth--where his ministry was so powerful that a formidable party in the Church of that city gloried in his type of preaching in preference to Paul's (1Co 1:12; 3:4), no doubt from the marked infusion of Greek philosophic culture which distinguished it, and which the apostle studiously avoided (1Co 2:1-5).
      Paul having passed through the upper coasts--"parts," the interior of Asia Minor, which, with reference to the seacoast, was elevated.
      came to Ephesus--thus fulfilling his promise (Ac 18:21).
      finding certain disciples--in the same stage of Christian knowledge as Apollos at first, newly arrived, probably, and having had no communication as yet with the church at Ephesus.

JFB.