John baptized — That is, the whole baptism and preaching of John pointed at Christ. After this John is mentioned no more in the New Testament. Here he gives way to Christ altogether.
Related Commentaries of Acts 19:4
Acts 19:4
4 Then said Paul, John verily baptized with the baptism of repentance, saying unto the people, that they should believe on him which should come after him, that is, on Christ Jesus.