Acts 2:1-11; Gal. 5:16-25; or 1Cor12, 2-13, Jn. 15:26-27, 16:12-15 or John 20, 19-23
On the day of Pentecost, the Holy Spirit descended with power upon the Apostles in the image of tongues of fire and thus began the mission of the Church in the world. Once they received the Spirit, they went out boldly and preached to all in Jerusalem and elsewhere. Jesus himself prepared the Eleven for this mission, appearing to them on many occasions after his Resurrection.