Today, the third Sunday of Advent, is known as Gaudete Sunday. Gaudete means “rejoice.” It is the first word of today’s introit (the reason this day is called Gaudete), and rejoicing is a predominant theme of today’s Mass. You’ll notice that today’s liturgical color is rose, not violet.
Note that during Advent, the Gloria is not said or sung (except on the Solemnity of the Immaculate Conception). Also, during Advent we will sing the Sanctus (Holy, holy, holy) and Agnus Dei (Lamb of God) in Latin.
Here are some of the proper texts—those that change with every Sunday or solemnity—to be sung for this Mass:
Introit: Rejoice in the Lord always; again I say, rejoice. Indeed, the Lord is near. (Philippians 4:4-5)
Responsorial psalm: My soul rejoices in my God. (Isaiah 61:10b)
Offertory: O Lord, you have favored your land; you have restored the well-being of Jacob. You have forgiven the iniquity of your people. (Psalm 85:2)
Communion: Say to the faint of heart: be strong and do not fear. Behold, our God will come, and he will save us. (Cf. Isaiah 35:4)
Recessional hymn: Rejoice, the Lord Is King (click to download; the pdf will appear in a new tab or window)