Advent is the beginning of the Church Year for most churches in the Western tradition. It begins on the fourth Sunday before Christmas Day, which is the Sunday nearest November 30, and ends on Christmas Eve (Dec 24). If Christmas Eve is a Sunday, it is counted as the fourth Sunday of Advent, with Christmas Eve proper beginning at sundown. Historically, the primary sanctuary color of Advent is Purple. This is the color of penitence and fasting as well as the color of royalty to welcome the Advent of the King. The purple of Advent is also the color of suffering used during Lent and Holy Week. This points to an important connection between Jesus’ birth and death. The nativity, the Incarnation, cannot be separated from the crucifixion. The purpose of Jesus’ coming into the world, of the "Word made flesh" and dwelling among us is to reveal God and His grace to the world through Jesus’ life and teaching, but also through his suffering, death, and resurrection. To reflect this emphasis, originally Advent was a time of penitence and fasting, much as the Season of Lent and so shared the color of Lent. In the four weeks of Advent the third Sunday came to be a time of rejoicing that the fasting was almost over (in some traditions it is called Gaudete Sunday, from the Latin word for "rejoice"). The shift from the purple of the Season to pink or rose for the third Sunday Advent candles reflected this lessening emphasis on penitence as attention turned more to celebration of the season. In recent times, however, Advent has undergone a shift in emphasis, reflected in a change of colors used in many churches. Except in the Eastern churches, the penitential aspect of the Season has been almost totally replaced by an emphasis on hope and anticipation. In many churches the third Sunday remains the Sunday of Joy marked by pink or rose.
The word Advent means "coming" or "arrival." The focus of the entire season is the celebration of the birth of Jesus the Christ in his First Advent, and the anticipation of the return of Christ the King in his Second Advent. Thus, Advent is far more than simply marking a 2,000 year old event in history. It is celebrating a truth about God, the revelation of God in Christ whereby all of creation might be reconciled to God. That is a process in which we now participate, and the consummation of which we anticipate. Scripture reading for Advent will reflect this emphasis on the Second Advent, including themes of accountability for faithfulness at His coming, judgment on sin, and the hope of eternal life