He saith unto them,.... Not denying it to be a truth they affirmed; but rather granting and allowing it: he argues upon it, though he tacitly refuses their sense and meaning of the phrase, thus,how then doth David in spirit call him Lord?
that is, if he is a mere man, if he is only the son of David, according to the flesh, if he has no other, or higher descent than from him, how comes it to pass, that David, under the inspiration of the Spirit of God, by which he wrote his book of Psalms, see 2Sa 23:1 where the passage, after cited, stands, to call him Lord; which supposes him to be more than barely his son, and to be a greater person than himself, one superior in nature and dignity to him?