2 Bible Verses about Feast Of Weeks

On the day of the Harvest Festival, they were all meeting together, when suddenly there came from the sky a sound like a violent blast of wind, and it filled the whole house where they were sitting. And they saw tongues like flames separating and settling one on the head of each of them,read more.
and they were all filled with the holy Spirit and began to say in foreign languages whatever the Spirit prompted them to utter.