Pentecost is a holy day in Christianity that happens on the 50th day after Easter each year.
On Easter, Christians celebrate the resurrection of Jesus. Pentecost is the day when the Holy Spirit came to Jesus’ disciples. The description of the event is told in the Book of Acts. Sitting in a house, a massive wind came and tongues of fire sat on each disciple. They were filled with the Holy Spirit and began to speak in tongues.