Acts 2:38 has been abandoned by Christianity
So has sacrificing Bulls and Goats.....When God Transitions from one method of Obtaining His Holy Spirit ( Repentance and water baptism , which was preached Truthfully by Peter in his time and place) , to another one ( Believing ONLY, which was later preached by Paul after Jesus TOLD HIM to preach it) .....when THAT happens , you go with the most Recent Plan.....Only to Paul were “ The Mysteries Of God” revealed.....”Mysteries” that even Jesus never discussed with His Disciples.....Go with the Guy with the most Truth who has the Latest “ Marching Orders” ——- PAUL
The 12 apostles didn't know that God had granted salvation to Gentiles until Cornelius and his household were saved, the Jews were shocked when they seen it. They believed only a Jew could be saved.
But Paul already knew it from the revelation you mentioned. Best advise I've seen on this forum. As Paul said, "follow me as I follow Christ."