After this, He says, “What think ye? A man had two sons; and he says to the first, go, work today in the vineyard. But he answered and said, I will not: but afterward he repented, and went. And he came to the second, and said likewise. And he answered and said, I go sir: and went not. Whether then of them two did the will of his father? They say, the first.”

Again He convicts them by a parable, intimating both their unreasonable obstinacy, and the submissiveness of those who were utterly condemned by them. For these two children declare what came to pass with respect to both the Gentiles and the Jews. For the former not having undertaken to obey, neither having become hearers of the law, showed forth their obedience in their works; and the latter having said, “All that the Lord shall speak, we will do, and will hearken,” in their works were disobedient. And for this reason, let me add, that they might not think the law would benefit them, He shows that this self-same thing condemns them, like as Paul also says, “Not the hearers of the law are just before God, but the doers of the law shall be justified.” For this intent, that He might make them even self-condemned, He causes the judgment to be delivered by themselves, like as He does also in the ensuing parable of the vineyard.

And that this might be done, He makes trial of the accusation in the person of an other. For since they were not willing to confess directly, He by a parable drives them on to what He desired.

But when, not understanding His sayings, they had delivered the judgment, He unfolds His concealed meaning after this, and says, “Publicans and harlots go into the kingdom of Heaven before you. For John came unto you in the way of righteousness, and you believed him not; but the publicans believed him; and you, when you had seen it, repented not afterwards, that you might believe him.”

For if He had said simply, harlots go before you, the word would have seemed to them to be offensive; but now, being uttered after their own judgment it appears to be not too hard.

Therefore He adds also the accusation. What then is this? “John came,” He says, “unto you,” not unto them, and not this only, but; also “in the way of righteousness.” “For neither with this can you find fault, that he was some careless one, and of no profit; but both his life was irreprehensible, and his care for you great, and you gave no heed to him.”

And with this there is another charge also, that publicans gave heed; and with this, again another, that “not even after them did ye. For you should have done so even before them, but not to do it even after them was to be deprived of all excuse;” and unspeakable was both the praise of the one, and the charge against the other. “To you he came, and you accepted him not; he came not to them, and they receive him, and not even them did ye take for instructors.”

See by how many things is shown the commendation of those, and the charge against these. To you he came, not to them. You believed not, this offended not them. They believed, this profited not you. — From Homily 67.