When Pentecost, the fiftieth day after Passover, came, all the believers were together in one place. ² Suddenly, a sound like a violently blowing wind came from the sky and filled the whole house where they were staying. ³ Tongues that looked like fire appeared to them. The tongues arranged themselves so that one came to rest on each believer. ⁴ All the believers were filled with the Holy Spirit and began to speak in other languages as the Spirit gave them the ability to speak.
⁵ Devout Jewish men from every nation were living in Jerusalem. ⁶ They gathered when they heard the wind. Each person was startled to recognize his own dialect when the disciples spoke.
(Acts 2:1-6 -- GW)