Now the Lord came down to see the town and the tower that the sons of man had built. “So they are all a single people with a single language!” said the Lord. “This is but the start of their undertakings! There will be nothing too hard for them to do. Come, let us go down and confuse their language on the spot so that they can no longer understand one another.” The Lord scattered them thence over the whole face of the earth, and they stopped building the town. It was named Babel therefore, because there the Lord confused the language of the whole earth. It was from there that the Lord scattered them over the whole face of the earth.
— Genesis 11:5-9
When Pentecost day came round, they had all met in one room, when suddenly they heard what sounded like a powerful wind from heaven, the noise of which filled the entire house in which they were sitting; and something appeared the them that seemed like tongues of fire; these separated and came to rest on the head of each of them. They were all filled with the Holy Spirit, and began to speak foreign languages as the Spirit gave them the gift of speech.
— Acts 2:1-4