Isaiah 49: 3. 5-6
The Lord promises that his Messiah will be formed in the womb and bring light and salvation to the ends of the earth. 

1 Corinthians 1: 1-3
Paul, with his apostolic authority, greets the Church in Corinth, reminding them of their vocation to holiness. 

John 1: 29-34
John the Baptist greets Christ as the lamb of God, and tells how he saw the Holy Spirit descend and rest on Jesus, the Messiah.