Adam Clarke's Commentary on the Bible - Acts 19:4
That they should believe on him which should come after - John baptized them with the baptism of repentance; this was common to all the baptisms administered by the Jews to proselytes; but telling them that they should believe on him who was coming, was peculiar to John's baptism. read more
Adam Clarke's Commentary on the Bible - Acts 19:2
Have ye received the Holy Ghost - It is likely that these were Asiatic Jews, who, having been at Jerusalem about twenty-six years before this, had heard the preaching of John, and received his baptism, believing in the coming Christ, whom John had proclaimed; but it appears that till this time they had got no farther instruction in the Christian religion. Paul, perceiving this, asked them if they had received the Holy Ghost since they believed? For it was the common privilege of the... read more