With today’s first Sunday of Advent, a new liturgical year begins. The Church takes up her journey again and invites us to reflect more intensely on the mystery of Christ, a mystery that is always new and that time cannot exhaust. Christ is the Alpha and the Omega, the beginning and the end. Thanks to him, the history of humanity proceeds as a pilgrimage toward the fulfilment of the Kingdom which he inaugurated with his Incarnation and victory over sin and death.
Pope St John Paul II, First Sunday of Advent, 2001