Advent is a period of four Sundays before Christmas celebrating the birth of Jesus. It marks the beginning of the Christian church's year. Advent wreaths symbolize eternity through an evergreen circle and represent God's eternal love through its green leaves. Each Sunday in Advent has a candle representing hope, love, joy, and peace lit on the wreath. The third Sunday is known as Gaudete Sunday and rose-colored vestments may be worn. The season blends preparation and penitence for Jesus' second coming with anticipation of celebrating his birth at Christmas.