Mt 2:13-15, 19-23
When the magi had departed, behold,
the angel of the Lord appeared to Joseph in a dream and said,
“Rise, take the child and his mother, flee to Egypt,
and stay there until I tell you.
Herod is going to search for the child to destroy him.”
Joseph rose and took the child and his mother by night
and departed for Egypt.
He stayed there until the death of Herod,
that what the Lord had said through the prophet might be fulfilled,
Out of Egypt I called my son.
When Herod had died, behold,
the angel of the Lord appeared in a dream
to Joseph in Egypt and said,
“Rise, take the child and his mother and go to the land of Israel,
for those who sought the child’s life are dead.”
He rose, took the child and his mother,
and went to the land of Israel.
But when he heard that Archelaus was ruling over Judea
in place of his father Herod,
he was afraid to go back there.
And because he had been warned in a dream,
he departed for the region of Galilee.
He went and dwelt in a town called Nazareth,
so that what had been spoken through the prophets
might be fulfilled,
He shall be called a Nazorean.
"Scripture tells us practically nothing about the first years and the boyhood of the Child Jesus. All we know are the facts of the sojourn in Egypt, the return to Nazareth, and the incidents that occurred when the twelve-year-old boy accompanied his parents to Jerusalem. In her liturgy the Church hurries over this period of Christ's life with equal brevity. The general breakdown of the family, however, at the end of the past century and at the beginning of our own, prompted the popes, especially the far-sighted Leo XIII, to promote the observance of this feast with the hope that it might instill into Christian families something of the faithful love and the devoted attachment that characterize the family of Nazareth. The primary purpose of the Church in instituting and promoting this feast is to present the Holy Family as the model and exemplar of all Christian families."
— Excerpted from With Christ Through the Year, Rev. Bernard Strasser, O.S.B.