John Chrysostom
Catena Aurea · Lukasevangelium 2
And it came to pass in those days, that there went out a decree from Cæsar Augustus, that all the world should be taxed. (And this taxing was first made when Cyrenius was governor of Syria.) And all went to be taxed, every one into his own city. And Joseph also went up from Galilee, out of the city of Nazareth, into Judæa, unto the city of David, which is called Bethlehem; (because he was of the house and lineage of David:) To be taxed with Mary his espoused wife, being great with child.
(in diem natal. Christi.) It was the Lord who directed Augustus to give this edict, that he might minister unto the coming of the Only-begotten; for it was this edict that brought Christ’s mother into her country as the prophets had foretold, namely, to Bethlehem of Judæa, according to the word, to a city of David, which is called Bethlehem.