This second message on the book of Luke begins with Mary's visit to her cousin, Elizabeth. Only Luke's gospel supplies certain details about Elizabeth, who upon hearing Mary's greeting, feels the baby leap for joy in her womb and is filled with the Holy Spirit. Upon the birth of John, Zechariah is also filled with the Holy Spirit and prophesies and sings about his son, John. God's great mercy shines between the lines of this account from Luke.