Luke 2:39

They returned into Galilee - But not immediately: for the coming of the wise men, and the retreat of Joseph with his family into Egypt, happened between this period of time, and his going to Nazareth in Galilee. - Bp. Pearce. But it is very likely, that as soon as the presentation in the temple, and the ceremonies relative to it, had been accomplished, that the holy family did return to Galilee, as St. Luke here states, and that they continued there till Herod's bloody purpose was discovered to them by the Lord; which probably took some time to bring it to its murderous crisis, after the departure of the magi. After which, they fled into Egypt, where they continued till the death of Herod; and it is probable that it is of a second return to Nazareth that St. Matthew speaks, Luke 2:23.

They returned into Galilee - Not immediately, but after a time. Luke has omitted the flight into Egypt recorded by Matthew; but he has not denied it, nor are his words to be pressed as if he meant to affirm that they went immediately to Nazareth. A parallel case we have in the life of Paul. When he was converted it is said that he came to Jerusalem, as if he had gone there immediately after his conversion Acts 9:26; yet we learn in another place that this was after an interval of three years, Galatians 1:17-18. In the case before us there is no improbability in supposing that they returned to Bethlehem, then went to Egypt, and then to Galilee.