In his The Liturgical Year, Dom Guéranger described the great transformation that took place on the first Pentecost: “These hundred and twenty disciples need but to speak of the Son of God, made Man, and our Redeemer; of the Holy Ghost, who renews our souls; of the heavenly Father, who loves and adopts us as His children: their word will find thousands to believe and welcome it. Those that receive it shall be called the Catholic Church, that is, universal, existing in all places and times. Jesus had said: ‘Go, teach all nations!’ The Holy Ghost brings from heaven both…