Luke
Acts 19:4BSB·traditional attribution

Paul explained: “John’s baptism was a baptism of repentance. He told the people to believe in the One coming after him, that is, in Jesus.”

John Calvin Reformed @genevareformer

4. John truly Paul’s admonition tended to this end, that these men being convict of their ignorance might desire to go forward. He saith that John preached of Christ who was to come. Therefore he sent out his disciples, “Ex carceribus,” from the goal. that running in the course they might go towards Christ who was not as yet revealed.

Matthew Henry Presbyterian @wholebiblehenry

Ephesus was a city of great note in Asia, famous for a temple built there to Diana, which was one of the wonders of the world: thither Paul came to preach the gospel while Apollos was at Corinth (Act 19:1); while he was watering there, Paul was planting here, and grudged not that Apollos entered into his labours and was building upon his foundation, but...

Commenting on Acts 19:1-7

John Gill Reformed Baptist @doctorgill

Then said Paul,.... In reply to their answer, understanding them that they were baptized by John, he takes it up, and gives an account of John's baptism: showing how agreeable it was, and that it was the same baptism with the baptism of Christ, being administered in his name: John verily baptized with the baptism of repentance; which required repentance antecedent to it, and was...