Called Pentecost in the New Testament the outpouring of the Holy Spirit to the Apostles occurred on the fiftieth day after the Resurrection of Jesus Christ. "On this day, eighth Sunday of Easter, we celebrate the holy Pentecost. Breath violently glossopyrseftos distributes, Christ the divine Spirit percent Apostolois. Ekkechytai great aid STEPS lungs' catching. In like manner the Apostles intercessions, O Christ our God, have mercy on us. Amen '
After the Ascension of Christ into heaven, the apostles and the other disciples, and women who from the beginning had accompanied him, the Holy Virgin Mary Mother of around 120 people, returned to the Mount of Olives in Jerusalem, entering the gallery, ie the upper floor of the house there, waited in prayer the outpouring of the Holy Spirit, according to the promise of the Savior Christ. In between there, and they elected Matthias and synarithmisan with the eleven apostles.
Then they paid by the Holy Spirit began to preach and invite people to be baptized and to receive and they grace the Holy Spirit. Whatever you have heard and live in Christ and had not then understand, now the Holy Spirit and experienced its promise to the people.
Now you know what is the prospect of the New life and to lead the people, which is why the first three thousand who were baptized, leading them to the dinner of Life, the Bank of the Eucharist, which hereinafter is synagmeni the Church as body of Christ, will feed on the Body and Blood of the Lord and therefore participates in the eternal life of God's Kingdom. At Pentecost the Church was born as a normal institution, but as a continuous presence of the grace of the Holy Spirit, and that is why Pentecost is not an event that happened again sometime, but it is the life of the Church as uninterrupted communion of the Holy Spirit . Pentecost is the birthday of the Church.