The pentecost
Acts 2:1-4
When Pentecost day came round, they had all met together, when suddenly there came from heaven a sound as of a violent wind which filled the entire house in which they were sitting; and there appeared to them tongues as 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 different languages as the Spirit gave them power to express themselves.