In the hymns of the season we find praise for the coming of Christ, the Creator of the universe, as Redeemer, combined with prayer to the coming judge of the world to protect us from the enemy.Similar ideas are expressed in the antiphons for the Magnificat on the last seven days before the Vigil of the Nativity.During this time the faithful are admonished To attain this object the Church has arranged the Liturgy for this season.In the official prayer, the Breviary, she calls upon her ministers, in the Invitatory for Matins, to adore "the Lord the King that is to come", "the Lord already near", "Him Whose glory will be seen on the morrow".
With Advent the ecclesiastical year begins in the Western churches.
On every day of Advent the Office and Mass of the Sunday or Feria must be said, or at least a Commemoration must be made of them, no matter what grade of feast occurs.
In the Divine Office the Te Deum , the joyful hymn of praise and thanksgiving, is omitted; in the Mass the Gloria in excelsis is not said. During this time the solemnization of matrimony ( Nuptial Mass and Benediction) cannot take place; which prohibition binds to the feast of Epiphany inclusively.
The Church in her Liturgy takes us in spirit back to the time before the incarnation of the Son of God, as though it were really yet to take place.
Cardinal Wiseman says: We are not dryly exhorted to profit by that blessed event, but we are daily made to sigh with the Fathers of old, "Send down the dew, ye heavens, from above, and let the clouds rain the Just One: let the earth be opened, and bud forth the Redeemer." The Collects on three of the four Sundays of that season begin with the words, "Lord, raise up thy power and come" -- as though we feared our iniquities would prevent His being born.