“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,”
King James Version (KJV)
19:1 Having passed through - Galatia and Phrygia, which were termed the upper parts of Asia Minor. Certain disciples - Who had been formerly baptized by John the Baptist, and since imperfectly instructed in Christianity.
Ac 19:1 Paul at Ephesus SUMMARY OF ACTS 19: Twelve of John's Disciples Baptized. Paul Teaches in the School of Tyrannus. God's Presence with Paul in Power. Sceva and His Sons. The Books of Magic Burned. Timothy and Erastus Sent into Macedonia. The Tumult Raised by Demetrius and the Craftsmen. The Wise Advice of the City Recorder. Paul having passed through the upper coasts. The mountain highlands of the interior of Asia Minor. See Ac 18:23. Came to Ephesus. Ephesus, on the coast, was near sea level. Finding certain disciples. These disciples had only been baptized with John's baptism (Ac 19:3), and had but an imperfect knowledge of Christ. Their case presents some difficulties hard to explain, unless we had more of the facts. They had evidently been baptized by some of John's disciples, possibly in Asia, after the Great Commission was given, and were no doubt Jews. Some think that they were baptized by Apollos before he was "instructed in the way of the Lord . . . more perfectly" (Ac 18:25,26).