Luke 20:16

And this happens as it were to men who are condemned, having nothing to answer to the plain evidence of justice. But it is the property of Divine mercy not to inflict punishment in secret, but to foretell it with threatenings, that so it might recall men to repentance; and thus it follows here, He shall come and destroy those husbandmen.

(de con. Ev. lib. iv. cap. 70.) Or else, in the multitude of which we are speaking there were those who craftily asked our Lord by what authority He acted; there were those also who not craftily, but faithfully, cried aloud, Blessed is he who cometh in the name of the Lord. And so there would be some who would say, He will miserably destroy those husbandmen, and let out his vineyard to others. Which are rightly said to have been the words of our Lord Himself, either on account of their truth, or because of the unity of the members with the head; while there would be others also who would say to those who made this answer, God forbid, inasmuch as they understood the parable was spoken against themselves. It follows, And he beheld them, and said, What is this then that is written, The stone which the builders rejected, the same is become the head of the corner?

The Jewish rulers were shut out then, because they resisted their Lord's will, and made the vineyard barren which was entrusted to them. But the cultivation of the vineyard was given to the Priests of the New Testament, upon which the Scribes and Pharisees, as soon as they perceived the force of the parable, refuse to permit it, saying as follows, God forbid. They did not however escape any whit the more, because of their obstinacy and disobedience to the faith of Christ.

Now Matthew seems to relate the parable differently; that when our Saviour asked indeed, What will he do then to the husbandmen? the Jews answered, he will miserably destroy them. But there is no difference between the two circumstances. The Jews at first pronounced that opinion, then perceiving the point of the parable said, God forbid, as Luke here relates.

He rightly puts a question to them, that they may condemn themselves by their own words, as it follows, What then will the Lord of the vineyard do to them? He says, the Lord of the vineyard will come, because in the Son is present also the Father's majesty; or because in the last times He will be more graciously present by His Spirit in the hearts of men.