The Gospel of Luke 2:10-14 says, And the angel said to them, “Be not afraid; for behold, I bring you good news of a great joy which will come to all the people; for to you is born this day in the city of David a Savior, who is Christ the Lord. And this will be a sign for you: you will find a babe wrapped in swaddling cloths and lying in a manger.” And suddenly there was with the angel a multitude of the heavenly host praising God and saying, “Glory to God in the highest, and on earth peace among men with whom he is pleased!” Scripture portrays the Messiah both as shepherd of souls and victim for souls. David was a shepherd boy when he was chosen to shepherd God’s people Israel as its king. Christ, his descendant, is the eternal shepherd of God’s redeemed people. Scripture also portrays the Messiah as a lamb, who will be led to slaughter. This was foreshadowed in the Paschal Lamb of Exodus 12, and spoken of by Isaiah (Is. 53). In the Gospel of John and St. John’s epistles, Jesus is explicitly called the “Lamb of God.” The Catechism of the Catholic Church (paragraph 608) says, After agreeing to baptize him along with the sinners, John the Baptist looked at Jesus and pointed him out as the "Lamb of God, who takes away the sin of the world." By doing so, he reveals that Jesus is at the same time the suffering Servant who silently allows himself to be led to the slaughter and who bears the sin of the multitudes, and also the Paschal Lamb, the symbol of Israel's redemption at the first Passover. Christ's whole life expresses his mission: "to serve, and to give his life as a ransom for many." Thus, it is fitting that the angels would revealed Christ’s birth to shepherds and they, in turn, would be among the first to acknowledge Him.