2 Bible Verses about Feast Of Weeks

And when the day of Pentecost came [Note: This was a Jewish festival held fifty days following the Passover Festival. Lev. 23:15-21], they [i.e., the twelve apostles] were all gathered together in one place [i.e., their second story living quarters, 1:13 ?]. Suddenly a rushing sound, like a fierce wind blowing, came from the sky above them, and [its noise] filled the entire house where they were sitting. Then they saw what appeared to be flames of fire shooting down and landing on each one of them.read more.
And they [i.e., the apostles] were all filled with [the power of] the Holy Spirit and began to speak ["the mighty accomplishments of God," See verse 11] in different languages, as the Holy Spirit gave them the ability.