1 Now when the day of Pentecost had come, they were all together in one place. 2 Suddenly a sound like a violent wind blowing came from heaven and filled the entire house where they were sitting. 3 And tongues spreading out like a fire appeared to them and came to rest on each one of them. 4 All of them were filled with the Holy Spirit, and they began to speak in other languages as the Spirit enabled them.
5 Now there were devout Jews from every nation under heaven residing in Jerusalem. 6 When this sound occurred, a crowd gathered and was in confusion because each one heard them speaking in his own language. 7 Completely baffled, they said, “Aren’t all these who are speaking Galileans? 8 And how is it that each one of us hears them in our own native language? 9 Parthians, Medes, Elamites, and residents of Mesopotamia, Judea and Cappadocia, Pontus and the province of Asia, 10 Phrygia and Pamphylia, Egypt and the parts of Libya near Cyrene, and visitors from Rome, 11 both Jews and proselytes, Cretans and Arabs—we hear them speaking in our own languages about the great deeds God has done!” 12 All were astounded and greatly confused, saying to one another, “What does this mean?” 13 But others jeered at the speakers, saying, “They are drunk on new wine!”
"And God said to Aharon, 'Go to meet Moshe in the wilderness'": This is that which is written, "God thunders wonders with His voice" - what is it that he thunders? When the Holy One, blessed be He, gave the Torah at Sinai, He showed wonders of wonders to Israel. How is it? The Holy One, blessed be He would speak and the voice would go out and travel the whole world: Israel would hear the voice coming to them from the South and they would run to the South to meet the voice; and from the South, it would switch for them to the North, and they would all run to the North; and from the North, it would switch to the East, and they would run to the East; and from the East, it would switch to the West, and they would run to the West; and from the West, it would switch [to be] from the heavens, and they would suspend their eyes [to the heavens], and it would switch [to be] in the earth, and they would stare at the earth, as it is stated, "From the Heavens did He make you hear His voice, to discipline you." And Israel would say one to the other, "And wisdom, from where can it be found". And Israel would say, from where is the Holy One, blessed be He, coming, from the East or from the South? As it is stated, "The Lord came from Sinai, and shone from Seir (in the East) to them"; and it is written, "And God will come from Teiman (in the South)." And it is stated, "And all the people saw the sounds (literally, voices)" - it is not written, "sound," here, but rather, "sounds." Rabbi Yochanan said, "The voice would go out and divide into seventy voices for the seventy languages, so that all the nations would hear. And each and every nation would hear in the language of the nation and their souls would depart. But Israel would hear and they were not injured." How did the voice go out? Rabbi Tanchuma said, "It would come go with two faces; [one] would kill the idolaters who did not accept it, and [one] would give life to Israel that did accept it." This is what Moshe stated to them at the end of forty years, "As who is it, from all flesh that heard the voice of the living God speak from amidst the fire" - you would hear His voice and live, but the idolaters heard and died.