When the Day of Pentecost had fully come, they were all with one accord in one place. And suddenly there came a sound from heaven, as of a rushing mighty wind, and it filled the whole house where they were sitting. Then there appeared to them divided tongues, as of fire, and one sat upon each of them. And they were all filled with the Holy Spirit and began to speak with other tongues, as the Spirit gave them utterance. Acts 2:1-4 NKJV
For many liturgical and other church traditions, Pentecost Sunday happens 50 days after Easter, and it celebrates the beginning of the Church. Pentecost sparked an international effort to include everyone, Jewish and non-Jewish, into God’s family, which is one reason we see the “speaking in tongues” miracle happening.
