Mark 11:33 KJV
And they answered and said unto Jesus, We cannot tell. And Jesus answering saith unto them, Neither do I tell you by what authority I do these things.
Mark 11:33, King James Version
In context
32 But if we shall say, Of men; they feared the people: for all men counted John, that he was a prophet indeed.
33 And they answered and said unto Jesus, We cannot tell. And Jesus answering saith unto them, Neither do I tell you by what authority I do these things.