Luke 2:39 - Ellicott's Commentary On The Whole Bible

They returned into Galilee. — Filling up the narrative from St. Matthew, we have to insert after the Presentation, the visit of the Magi, the massacre of the Infants, and the flight into Egypt. It seems probable that St. Luke was not acquainted with St. Matthew’s narrative, nor St. Matthew with St. Luke’s. Each wrote from what he heard, or found in previous existing narratives, more or less incomplete, and hence cannot readily be brought into harmony with the other. Here the parents return to Nazareth as their own city. In St. Matthew the return appears to be determined by their fears of Archelaus. It is possible that, though previously domiciled at Nazareth, they may have thought of settling at Bethlehem, and were deterred from doing so by the cruelty of Herod and his son.