And it came to pass in those days, that there went out a decree from Caesar Augustus, that all the world should be taxed.
All Commentaries on Luke 2:1 Go To Luke 2
Greek Expositor
AD 1000
Christ is born also at a time when the princes of Judah had failed, and the kingdom was transferred to Roman governors, to whom the Jews paid tribute; and then was fulfilled the, prophecy, saying, There shall not fail a leader from Judah, nor a prince from between his feet, until he shall come who is to be sent. And now when Caesar Augustus was in the 42nd year of his reign, there went forth an edict from him that all the world should be taxed for the payment of tribute, the management of which he committed to a certain Cyrinuswhom he made governor of Judea and Syria; and so it follows, This taxing was first made.
Now he added, a city of David, that he might declare that the promise made by God to David, namely, that from the fruit of his loins there should go before him a king forever, was already fulfilled. Whence it follows, Because he was of the house and lineage of David. But since Joseph was of t e family of David, it pleased the Evangelist to make known also that the Virgin herself was of the same family, because the Divine law enjoined marriages between those of the same line; and therefore it follows, With Mary his espoused wife.