“And when the days of the Pentecost were accomplished, they were all together in one place: And suddenly there came a sound from heaven, as of a mighty wind coming: and it filled the whole house where they were sitting. And there appeared to them parted tongues, as it were of fire: and it sat upon every one of them. And they were all filled with the Holy Ghost: and they began to speak with divers tongues, according as the Holy Ghost gave them to speak. Now there were dwelling at Jerusalem, Jews, devout men, out of every nation under heaven. And when this was noised abroad, the multitude came together, and were confounded in mind, because that every man heard them speak in his own tongue” (Acts 2:1-7).
The gift of tongues is a charism, a gift (Greek, χαρις, grace). The gift of tongues (glossolalia) at Pentecost reversed the discord of tongues after the Tower of Babel. A charism cannot be learned, developed, demanded of God, or given for personal use. All of the gifts of the Spirit are always given for the good of the Church, the whole Church. They are never given to a whole group.
“If any speak with a tongue, let it be by two, or at the most by three, and in course: and let one interpret. But if there be no interpreter, let him hold his peace in the church and speak to himself and to God” (1 Corinthians 14:27-28).