201 Now it happened on one of those days, as He taught the people in the temple and preached the gospel, that the chief priests and the scribes, together with the elders, confronted Him 2 and spoke to Him, saying, "Tell us, by what authority are You doing these things? Or who is he who gave You this authority?" 3 But He answered and said to them, "I also will ask you one thing, and answer Me: 4 The baptism of John--was it from heaven or from men?" 5 And they reasoned among themselves, saying, "If we say, 'From heaven,' He will say, 'Why then did you not believe him?' 6 But if we say, 'From men,' all the people will stone us, for they are persuaded that John was a prophet." 7 So they answered that they did not know where it was from.
Matthew Henry's Commentary on Luke 20:1-7
Commentary on Luke 20:1-8
(Read Luke 20:1-8)
Men often pretend to examine the evidences of revelation, and the truth of the gospel, when only seeking excuses for their own unbelief and disobedience. Christ answered these priests and scribes with a plain question about the baptism of John, which the common people could answer. They all knew it was from heaven, nothing in it had an earthly tendency. Those that bury the knowledge they have, are justly denied further knowledge. It was just with Christ to refuse to give account of his authority, to those who knew the baptism of John to be from heaven, yet would not believe in him, nor own their knowledge.