2 Bible Verses about Feast Of Weeks

During the course of the day of Pentecost they were all together, when suddenly there came a sound from heaven like a violent blast of wind, which filled the whole house where they were seated. They saw tongues like flames distributing themselves, one resting on the head of each,read more.
and they were all filled with the holy Spirit ??they began to speak in foreign tongues, as the Spirit enabled them to express themselves.