Acts 2:2-4

When suddenly there came a sound from heaven like the rushing of a violent tempest blast, and it filled the whole house in which they were sitting. And there appeared to them tongues resembling fire, which were separated and distributed and which settled on each one of them. And they were all filled (diffused throughout their souls) with the Holy Spirit and began to speak in other (different, foreign) languages (tongues), as the Spirit kept giving them clear and loud expression [in each tongue in appropriate words].