Acts 2:2-12

2:2 Suddenly a sound like a violent wind blowing came from heaven and filled the entire house where they were sitting. 2:3 And tongues spreading out like a fire appeared to them and came to rest on each one of them. 2:4 All of them were filled with the Holy Spirit, and they began to speak in other languages as the Spirit enabled them.

2:5 Now there were devout Jews from every nation under heaven residing in Jerusalem. 2:6 When this sound occurred, a crowd gathered and was in confusion, because each one heard them speaking in his own language. 2:7 Completely baffled, they said, “Aren’t all these who are speaking Galileans? 2:8 And how is it that each one of us hears them in our own native language? 2:9 Parthians, Medes, Elamites, and residents of Mesopotamia, Judea and Cappadocia, Pontus and the province of Asia, 2:10 Phrygia and Pamphylia, Egypt and the parts of Libya near Cyrene, and visitors from Rome, 2:11 both Jews and proselytes, Cretans and Arabs – we hear them speaking in our own languages about the great deeds God has done!” 2:12 All were astounded and greatly confused, saying to one another, “What does this mean?”

Acts 4:31

4:31 When they had prayed, the place where they were assembled together was shaken, and they were all filled with the Holy Spirit and began to speak the word of God courageously.