This great festival takes its name from the happy tidings brought by the angel Gabriel to the Blessed Virgin Mary, concerning the incarnation of the Son of God. It commemorates the most important embassy that was ever known: an embassy sent by the King of kings, performed by one of the chief princes of his heavenly court; directed, not to the kings or emperors of the earth, but to a poor, unknown, retired virgin, who, being endowed with the most angelic purity of soul and body, being withal perfectly humble and devoted to God, was greater in his eyes than all the sceptres in the world could make a universal monarch.