The fifth mention of believers being baptized in the Holy Spirit is found in Acts 19. While traveling through Ephesus, the apostle Paul met some disciples and asked them the following question: “Did you receive the Holy Spirit when you believed?” (Acts 19:2).

Paul, the man who wrote the majority of the New Testament epistles, clearly believed that it is possible to believe in Jesus but not have received the Holy Spirit in some sense. Otherwise, he would not have asked such a question.

The men replied that they had never heard of the Holy Spirit. In fact, they had only heard of the coming Messiah through John the Baptist, the one who had baptized them. Paul immediately baptized them again in water, and this time they experienced true Christian baptism. Finally, Paul laid his hands on them that they might receive the Holy Spirit:

When they heard this, they were baptized in the name of the Lord Jesus. And when Paul had laid his hands upon them, the Holy Spirit came on them, and they began speaking with tongues and prophesying. There were in all about twelve men (Acts 19:5-7).

Again, it is obvious that the baptism in the Holy Spirit was subsequent to salvation, regardless of whether or not these twelve men were born again before they met Paul. Also, once again, the accompanying sign of their Holy Spirit baptism was speaking in tongues (and in this case also prophecy).