When the apostle Paul met the twelve believers in Ephesus (Acts 19:2) he asked them a question - "Have you received the Holy Spirit?" They answered "No, they hadn't even heard about receiving the Holy Spirit". Paul prayed together with them and "the Holy Spirit came upon them and they spoke with tongues and prophesied".

The same thing happened to the 120 people waiting on God's promise of His Holy Spirit in Jerusalem on the day we now call Pentecost. They also spoke with tongues and prophesied (Acts 1 & 2 ). This was all spoken about by Jesus and should have been expected since Jesus was said to be the one who would baptize in the Holy Spirit and fire .