But when he heard that Archelaus was reigning over Judea in place of his father Herod, he was afraid to go there, and being warned in a dream he withdrew to the district of Galilee.
See Appendix, "Herod."
The Greek here (χρηματίζω) is the same as Matthew 2:12, "And being warned in a dream not to return to Herod, [the wise men] departed to their own country by another way."
And he went and lived in a city called Nazareth, so that what was spoken by the prophets might be fulfilled, that he would be called a Nazarene.
The etymology of the city’s name is uncertain; it is not mentioned in the Old Testament or rabbinic literature; the first reference is in the New Testament.
(Britannica, T. Editors of Encyclopaedia. "Nazareth." Encyclopedia Britannica, September 10, 2012. https://www.britannica.com/place/Nazareth-Israel.)
Secular history indicates Nazareth was a town where priests who served in the Temple lived, but was otherwise unremarkable. Although Nazareth does not appear in the Old Testament as such, and little is known in secular history about the town, this verse nonetheless makes clear that Old Testament writings find their fulfillment in it.
Nazareth in Greek is "Nazara" (Ναζαρά), and a person from Nazareth is a "Nazaraean" (Ναζωραῖος). (We note that "Nazarene" is usually translated, "of Nazareth," which is like saying "from America" instead of "American.")
The Hebrew for "separate" is "nāzar" (נָזַר), and a Nazirite is "nāzîr" (נָזִיר).
Matthew's assertion is that Jesus fulfills the pattern of the Nazirite vow (Numbers 6). See Appendix, "On Nazirites."
When accusing Paul before Felix, the attorney Tertullus calls the church, "the sect of the Nazarenes."
Acts 24:5
We have found this man a plague, one who stirs up riots among all the Jews throughout the world and is a ringleader of the sect of the Nazarenes.
And when they had performed everything according to the Law of the Lord, they returned into Galilee, to their own town of Nazareth.
The Greek here (τελέω) is a word that typically means "finish out."
Luke 12:50
I have a baptism to be baptized with, and how great is my distress until it is accomplished!
Luke 18:31
And taking the twelve, he said to them, "See, we are going up to Jerusalem, and everything that is written about the Son of Man by the prophets will be accomplished.
Luke 22:37
I tell you that this Scripture must be fulfilled in me: 'And he was numbered with the transgressors.' For what is written about me has its fulfillment."
John 19:30
When Jesus had received the sour wine, he said, "It is finished," and he bowed his head and gave up his spirit.
Genesis 6:22
Noah did this; he did all that God commanded him.
Exodus 40:16
This Moses did; according to all that the LORD commanded him, so he did.
Joshua 11:15
Just as the LORD had commanded Moses his servant, so Moses commanded Joshua, and so Joshua did. He left nothing undone of all that the LORD had commanded Moses.
1 Kings 15:5
David did what was right in the eyes of the LORD and did not turn aside from anything that he commanded him all the days of his life, except in the matter of Uriah the Hittite.
And the child grew and became strong, filled with wisdom. And the favor of God was upon him.
Compare:
Luke 1:80
And the child grew and became strong in spirit, and he was in the wilderness until the day of his public appearance to Israel.
John 3:30
He must increase, but I must decrease.
Proverbs 3:1-4
My son, do not forget my teaching,
but let your heart keep my commandments,
for length of days and years of life
and peace they will add to you.
Let not steadfast love and faithfulness forsake you;
bind them around your neck;
write them on the tablet of your heart.
So you will find favor and good success
in the sight of God and man.