"After Jesus ascended into heaven, the disciples were praying on the day of Pentecost. They then had a powerful experience of the coming of the Holy Spirit. Their response is striking and instructive: They went out the door of the place where they had been gathered, and they began to talk about Jesus. They used their own words, gave examples of their own life with Jesus, they witnessed their faith in him as the risen Son of God, and an amazing thing happened: People believed them."
Archbishop Lucas expounds on the importance of this feast, and a brand new one established this year by Pope Francis which celebrates Mary, Mother of the Church.