Baptism of John - Not Enough

Meanwhile, a Jew named Apollos, an eloquent speaker who knew the Scriptures well, had arrived in Ephesus from Alexandria in Egypt. He had been taught the way of the Lord, and he taught others about Jesus with an enthusiastic spirit and with accuracy. However, he knew only about John’s baptism. When Priscilla and Aquila heard him preaching boldly in the synagogue, they took him aside and explained the way of God even more accurately. [Acts 18.24-26]

While Apollos was in Corinth, Paul traveled through the interior regions until he reached Ephesus, on the coast, where he found several believers. “Did you receive the Holy Spirit when you believed?” he asked them. “No,” they replied, “we haven’t even heard that there is a Holy Spirit.” “Then what baptism did you experience?” he asked. And they replied, “The baptism of John.” Paul said, “John’s baptism called for repentance from sin. But John himself told the people to believe in the one who would come later, meaning Jesus.” As soon as they heard this, they were baptized in the name of the Lord Jesus. Then when Paul laid his hands on them, the Holy Spirit came on them, and they spoke in other tongues and prophesied. There were about twelve men in all. [Acts 19.1-7]

If, for a moment, we look objectively at these accounts from the book of Acts, we must conclude that there is definitely something unique about the baptism of the Holy Spirit relative to believing in Jesus. However, I am not sure I comprehend all that is actually being said!

If the people Apollos ministered to originally knew about Jesus but only John's baptism of repentance, then how was the act of baptism in the name of Jesus any different? Doesn't believing in Jesus require repentance? Is baptism in Jesus' name also the baptism of the Holy Spirit? Does the baptism of the Holy Spirit always involve speaking in tongues and prophesying?

So far, it seems every account of the Holy Spirit coming on the scene in the New Testament involved tongues and prophecy. Are modern believers kidding themselves in regard to their relationship with God if they have not experienced tongues and prophecy?

So, if the baptism of John is not enough, then repentance is not enough. It is not enough to be sorry. If believing in Jesus then is accompanied by these unusual evidences of the Holy Spirit, then repentance and faith are incomplete without them.

Father, I don't know what conclusions I have arrived at here, but I have raised some questions. Please help me - help us - to have correct understanding of what we believe!