Mark 11:33

33 So they answered Jesus, "We don't know." Jesus said, "Then I won't tell you by what authority I am doing these things either."

Mark 11:33 Meaning and Commentary

Mark 11:33

And they answered and said unto Jesus
Being reduced by this dilemma to the greatest streight and difficulty;

we cannot tell:
they could, if they would, but they did not care to tell; they knew if they did, they should expose themselves one way or other:

and Jesus answering, saith unto them, neither do I tell you by what
authority I do these things; (See Gill on Matthew 21:27).

Mark 11:33 In-Context

31 They talked to each other about it. They said, "If we say, 'From heaven,' he will ask, 'Then why didn't you believe him?'

32 But what if we say, 'From men'?" They were afraid of the people. Everyone believed that John really was a prophet.

33 So they answered Jesus, "We don't know." Jesus said, "Then I won't tell you by what authority I am doing these things either."