A fundamental element of Pentecost is astonishment. Our God is a God of astonishment; this we know. No one expected anything more from the disciples: after Jesus’ death they were a small, insignificant group of defeated orphans of their Master. There occurred instead an unexpected event that astounded: the people were astonished because each of them heard the disciples speaking in their own tongues, telling of the great works of God (cf. Acts 2:6–7, 11). The Church born at Pentecost is an astounding community because, with the force of her arrival from God, a new message is proclaimed—the resurrection of Christ—with a new language, the universal one of love. A new proclamation: Christ lives, he is risen. A new language: the language of love. The disciples are adorned with power from above and speak with courage. Only minutes before, they all were cowardly, but now they speak with courage and candor, with the freedom of the Holy Spirit.
Thus the Church is called into being forever, capable of astounding while proclaiming to all that Jesus Christ has conquered death, that God’s arms are always open, that his patience is always there awaiting us in order to heal us, to forgive us. The risen Jesus bestowed his Spirit on the Church for this very mission.
Take note: if the Church is alive, she must always surprise. It is incumbent upon the living Church to astound. A Church that is unable to astound is a Church that is weak, sick, dying, and that needs admission to the intensive care unit as soon as possible!
—Excerpted from Walking with Jesus by Pope Francis