Mark 11:33

33 So they answered Jesus, "We don't know." And Jesus said to them, "Neither will I tell you by what authority I do these things."

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 began to argue among themselves: "If we say, 'From heaven,' He will say, 'Then why didn't you believe him?'

32 But if we say, 'From men' "-they were afraid of the crowd, because everyone thought that John was a genuine prophet.

33 So they answered Jesus, "We don't know." And Jesus said to them, "Neither will I tell you by what authority I do these things."