“After Jesus had been born at Bethlehem of Judea during the reign of King Herod, suddenly some wise men came to Jerusalem from the east asking, 'Where is the infant king of the Jews? We saw his star as it rose and have come to do him homage'” (Mt 2: 1-2).
The Twelfth Night is the manifestation of Jesus as the Messiah of Israel, the Son of God and Savior of the world.
In these wise men from the east (cf. Matthew 2:1), representatives of pagan religions from nearby countries, the Gospel sees the beginnings of the nations that will welcome the Good News of salvation through the Incarnation.
The arrival of the wise men to Jerusalem to do homage to the king of the Jews (cf. Mt 2: 2) shows that they seek in Israel the messianic light of the Star of David, the one who is the king of nations.
Their arrival means that pagans can not find and adore Jesus as the Son of God and Savior of the world without turning to the Jews and receiving their messianic promise from them as contained in the Old Testament.
The Epiphany manifests that "the fullness of the Gentiles entered the family of the patriarchs and acquired the dignity of the Israelites.