Acts 19:1-4

It happened that while Apollos was in Corinth, Paul went through the upper [inland] districts and came down to Ephesus, and found some disciples. He asked them, “Did you receive the Holy Spirit when you believed [in Jesus as the Christ]?” And they said, “No, we have not even heard that there is a Holy Spirit.” And he asked, “Into what then were you baptized?” They said, “Into John’s baptism.” Paul said, “John performed a baptism of repentance, continually telling the people to believe in Him who was coming after him, that is, [to confidently accept and joyfully believe] in Jesus [the Messiah and Savior].”