Matthew 21:35

And "He sent His servants," that is, the prophets, "to receive the fruit;" that is, their obedience, the proof of it by their works. But they even here showed their wickedness, not only by failing to give the fruit, after having enjoyed so much care, which was the sign of idleness, but also by showing anger towards them that came. For they that had not to give when they owed, should not have been indignant, nor angry, but should have entreated. But they not only were indignant, but even filled their hands with blood, and while deserving punishment, themselves inflicted punishment. Therefore He sent both a second, and a third company, both that the wickedness of these might be shown, and the love towards man of Him who sent them.

Beat them, as Jeremiah, killed them, as Isaiah, stoned them, as Naboth and Zacharias, whom they slew between the temple and the altar.

At each step of their wickedness the mercy of God was increased, and at each step of the Divine mercy the wickedness of the Jews increased; thus there was a strife between human wickedness and Divine goodness.

Morally; a vineyard has been let out to each of us to dress, when the mystery of baptism was given us, to be cultivated by action. Servants one, two, and three are sent us when Law, Psalm, and Prophecy are read, after whose instructions we are to work well. He that is sent is beaten and cast out when the word is contemned, or, which is worse, is blasphemed. He kills (as far as in him lies) the heir, who tramples under foot the Son, and does despite to the Spirit of grace. The wicked husbandman is destroyed, and the vineyard is given to another, when the gift of grace which the proud has contemned is given to the lowly.

Or, the first servants who were sent were the Lawgiver Moses himself, and Aaron the first Priest of God; whom, having beaten them with the scourge of their tongue, they sent away empty; by the other servants understand the company of the Prophets.