Advent is not officially considered a penitential season in the Catholic Church, but it does include some penitential elements. According to canon law (CIC c.1250), Lent is the only period formally recognized as a penitential season.

The period of Advent is described as one of "devout and joyful expectation," with an initial focus on the Second Coming of Christ and, beginning December 17, shifting attention to His birth at Christmas. The faithful are encouraged to reflect on the freedom from sin offered through Christ, who has already come.

Despite this joy, there are aspects of Advent that call for personal reflection and preparation. The Church encourages believers to "make straight the ways of the Lord" by renouncing sin and seeking reconciliation with God during this time. This is reflected in certain traditions such as using purple vestments and emphasizing conversion of heart.

As stated in the release: "So just as the Church 'fasts' from the Gloria until Christmas, so that when we sing the angels’ hymn announcing the birth of Christ, it is all the more joyful, it is good for us to 'fast' from something until Christmas, so we can temper our hearts to be better prepared for not just a joyful celebration of Christmas but a joyful welcoming of Christ when He comes again."