He said unto them,
How then does David in the Spirit call him Lord, saying,
All Commentaries on Matthew 22:43 Go To Matthew 22
John Chrysostom
AD 407
For since He was now about to go on to His passion, He sees forth the prophecy that plainly proclaims Him to be Lord; and not as having come to do this without occasion, nor as having made this His aim, but from a reasonable cause.
For having asked them first, since they answered not the truth concerning Him (for they said He was a mere man), to overthrow their mistaken opinion, He thus introduces David proclaiming His Godhead. For they indeed supposed that He was a mere man, wherefore also they said, the Son of David; but He to correct this brings in the prophet witnessing to His being Lord, and the genuineness of His Sonship, and His equality in honor with His Father.