23 Then he was back in the Temple, teaching. The high priests and leaders of the people came up and demanded, "Show us your credentials. Who authorized you to teach here?" 24 Jesus responded, "First let me ask you a question. You answer my question and I'll answer yours. 25 About the baptism of John - who authorized it: heaven or humans?" 26 if we say 'humans,' we're up against it with the people because they all hold John up as a prophet." 27 They decided to concede that round to Jesus. "We don't know," they answered. Jesus said, "Then neither will I answer your question.
28 "Tell me what you think of this story: A man had two sons. He went up to the first and said, 'Son, go out for the day and work in the vineyard.'
Matthew Henry's Commentary on Matthew 21:23-28
Commentary on Matthew 21:23-27
(Read Matthew 21:23-27)
As our Lord now openly appeared as the Messiah, the chief priests and scribes were much offended, especially because he exposed and removed the abuses they encouraged. Our Lord asked what they thought of John's ministry and baptism. Many are more afraid of the shame of lying than of the sin, and therefore scruple not to speak what they know to be false, as to their own thoughts, affections, and intentions, or their remembering and forgetting. Our Lord refused to answer their inquiry. It is best to shun needless disputes with wicked opposers.
Commentary on Matthew 21:28-32
(Read Matthew 21:28-32)
Parables which give reproof, speak plainly to the offenders, and judge them out of their own mouths. The parable of the two sons sent to work in the vineyard, is to show that those who knew not John's baptism to be of God, were shamed by those who knew it, and owned it. The whole human race are like children whom the Lord has brought up, but they have rebelled against him, only some are more plausible in their disobedience than others. And it often happens, that the daring rebel is brought to repentance and becomes the Lord's servant, while the formalist grows hardened in pride and enmity.