27 Then they came again to Jerusalem. And as He was walking in the temple, the chief priests, the scribes, and the elders came to Him. 28 And they said to Him, "By what authority are You doing these things? And who gave You this authority to do these things?" 29 But Jesus answered and said to them, "I also will ask you one question; then answer Me, and I will tell you by what authority I do these things: 30 The baptism of John--was it from heaven or from men? Answer Me." 31 And they reasoned among themselves, saying, "If we say, 'From heaven,' He will say, 'Why then did you not believe him?' 32 But if we say, 'From men' "--they feared the people, for all counted John to have been a prophet indeed. 33 So they answered and said to Jesus, "We do not know." And Jesus answered and said to them, "Neither will I tell you by what authority I do these things."
Matthew Henry's Commentary on Mark 11:27-33
Commentary on Mark 11:27-33
(Read Mark 11:27-33)
Our Saviour shows how near akin his doctrine and baptism were to those of John; they had the same design and tendency, to bring in the gospel kingdom. These elders did not deserve to be taught; for it was plain that they contended not for truth, but victory: nor did he need to tell them; for the works he did, told them plainly he had authority from God; since no man could do the miracles which he did, unless God were with him.