PentecostToday is Pentecost, the day that is commonly known as the Birthday of the Church. It was on this day that the Holy Spirit came among the apostles and gave them the ability to proclaim the Gospel to all sorts of people-people who did not speak the same language as the Apostles.
The structure of the Church as we know it also began that day, for it was on Pentecost that Peter's public leadership became apparent for the wider world. Through the ages, and in good times and bad, the Church has rolled on. Just when the World has declared the Church to be at an end, it comes back ever-stronger, and so it will do so again and again so long as this Earthly sphere shall last.