and they were all filled with the Holy Spirit and began to speak in other tongues, as the Spirit gave them the words.
In context
2Suddenly there came from heaven a sound like a violent wind rushing through, and it filled the whole house where they were sitting. 3Tongues that seemed to be of fire appeared to them, dividing and settling on each one of them, 4and they were all filled with the Holy Spirit and began to speak in other tongues, as the Spirit gave them the words. 5Now there were devout Jews living in Jerusalem, from every nation under heaven. 6When that sound was heard, a crowd gathered and stood bewildered, because each one heard them speaking in his own language.