The fourth candle represents peace and is called the "Angel’s Candle." The angels announced that Jesus came to bring peace--He came to bring people close to God and to each other again. This color is also purple to represent the culmination of love through the Messiah.
Let us light the third candle. The third candle symbolizes joy and is called the "Shepherd’s Candle." To the shepherd’s great joy, the angels announced that Jesus came for humble, unimportant people like them, too. In liturgy, the color rose signifies joy. This candle is colored pink to represent joyfulness and rejoicing.
Let us light the second candle of advent season. The second candle represents faith and is called "Bethlehem’s Candle." Micah had foretold that the Messiah would be born in Bethlehem, which is also the birthplace of King David. The second candle is also purple to symbolism preparation for the coming king.