What is Pentecost?  This is a very special time in the Bible when the disciples and other Christians received the Holy Spirit.  God didn't just pick any day for this to happen. 

Pentecost occurred 50 days after Easter Sunday or 50 days after Jesus rose from the dead. 

Just before Jesus was taken up to heaven he told the disciples- that they would receive power from the Holy Spirit so they could be witnesses for Christ to the whole world. 

Pentecost was a day to celebrate the end of the grain harvest.  The disciples and other Christians had come together to thank God and suddenly a sound like the blowing of a strong wind came from heaven and filled the whole house where they were sitting. 

Next they saw tongues of fire that separated and came to rest on each of them.  They were filled with the Holy Spirit and began speaking in different languages.

There were people of many different ethnic backgrounds staying in Jerusalem from all over.  These people ran over to see what all the noise was about and were surprised to hear their own languages spoken throughout this group!   Imagine all these people speaking many different languages at the same time and shouting out praises to God.

Some of the crowd that gathered started making fun of them and just thought the disciples had had too much to drink!

When Peter started to hear these rumors he raised his voice and talked to the crowd.  He explained that Joel, a messenger of God's word said that this very thing would happen a long time ago.  Peter continued and explained how God brought Jesus to them and that they had crucified him.  The crowd understood and felt responsible for doing this and they wanted to know what they could do now. Peter explained that they should repent and be baptized. Because of Jesus death and his resurrection people could be forgiven and receive the Holy Spirit. 

On Pentecost, the Holy Spirit became part of every Christian for the very first time.