III. The chosen race is no longer the Jews, but believers of every nation
And so they enter the chief city of the Kingdom of Judæa, and in the royal city ask that He should be shown them Whom they had learned was begotten to be King. Herod is perturbed: he fears for his safety, he trembles for his power, he asks of the priests and teachers of the Law what the Scripture has predicted about the birth of Christ, he ascertains what had been prophesied: truth enlightens the wise men, unbelief blinds the experts: carnal Israel understands not what it reads, sees not what it points out; refers to the pages, whose utterances it does not believe.
Where is your boasting, O Jew? Where your noble birth drawn from the stem of Abraham? Is not your circumcision become uncircumcision? Behold, the greater serves the less, and by the reading of that covenant which you keep in the letter only, you become the slave of strangers born, who enter into the lot of your heritage. Let the fullness of the nations enter into the family of the patriarchs, yea let it enter, and let the sons of promise receive in Abraham's seed the blessing which his sons, according to the flesh, renounce their claim to.
In the three Magi let all people worship the Author of the universe: and let God be known not in Judæa alone, but in all the world, so that everywhere “His name” may be “great in Israel.” For while the dignity of the chosen race is proved to be degenerate by unbelief in its descendants, it is made common to all alike by our belief.
Source: Sermons (New Advent)