Acts 18:23-25

²³And after he had spent some time there, he departed, and went through the country of Galatia and Phrygia, in order, confirming all the disciples.

²⁴Now a certain Jew, named Apollo, born at Alexandria, an eloquent man, came to Ephesus, one mighty in the scriptures.

²⁵This man was instructed in the way of the Lord; and being fervent in spirit, spoke, and taught diligently the things that are of Jesus, knowing only the baptism of John.