The fourth Sunday of Lent is traditionally known by the name Laetare Sunday. This name is taken from the Introit at Mass, Laetare Jerusalem which means “Rejoice, O Jerusalem.” Laetare Sunday marks the halfway point through the Lenten season of fasting, abstinence, and penance, and because of this it is a day of joy in anticipation of the close arrival of Easter. This day corresponds with Gaudete Sunday halfway through the Advent season, where the priests wear rose-colored liturgical vestments and the altar is decorated with flowers, often roses.
“Christian life is a retreat. We are ‘not of this world’, just as Jesus Christ is ‘not of this world’ (John 17:14). What is the world? It is, as St. John said, the ‘lust of the flesh’, that is, sensuality and corruption in our desires and deeds; ‘the lust of the eyes’, curiosity, avarice, illusion, fascination, error, and folly in the affectation of learning, and, finally, pride and ambition (1 John 2:16). To these evils of which the world is full, and which make up its substance, a retreat must be set in opposition. We need to make ourselves into a desert by a holy detachment. Christian life is a battle … We must never cease to fight. In this battle, St. Paul teaches us to make an eternal abstinence, that is, to cut ourselves off from the pleasures of the senses and guard our hearts from them … it was to repair and to expiate the failings of our retreat, of our battle against temptations, of our abstinence, that Jesus was driven into the desert. His fast of forty days prefigured the lifelong one that we are to practice by abstaining from evil deeds and by containing our desires within the limits laid down by the law of God.”— Bishop Jacques-Benigne Bossuet, p. 17-18
