What happened at Pentecost?
Jesus ascended into heaven and promised to send his disciples a helper.
The disciples prayed every day and waited in Jerusalem.
The disciples are gathered together when suddenly a huge wind filled the house the disciples were in and fire appeared above their heads.
The apostles are then filled with the Holy Spirit.
The disciples could (and had the ability), to speak and understand different languages.
The people were shocked and asked how so Peter explained to them how.