Third Sunday of Advent - Rejoice!

Excerpts from the reference source mentioned at the end of this post:

The third Sunday of Advent is known as “Gaudete Sunday.”
Its name is taken from the entrance antiphon of the Mass, which is:

Rejoice in the Lord always; again I say, rejoice.
Indeed, the Lord is near.

This is a quotation from Philippians 4:4-5, and in Latin, the first word of the antiphon is gaudete (Latin, “rejoice”; it's also pronounced with three syllables: gau-de-te)

Advent is the season of preparing for the arrival of the Lord Jesus (both his first coming and his second coming), and by the third Sunday of Advent, we are most of the way through the season.
Thus it is appropriate to rejoice as we see the goal of the season approaching: “The Lord is near.”

Reference: With thanks to the National Catholic Register