Mark 11:28-33

and say unto him, By what authority doest thou these things? and who gave thee this authority to do these things? And Jesus answered and said unto them, I will also ask of you one question, and answer me, and I will tell you by what authority I do these things. The baptism of John, was it from heaven, or of men? answer me. And they reasoned with themselves, saying, If we shall say, From heaven; he will say, Why then did ye not believe him? But if we shall say, Of men; they feared the people: for all men counted John, that he was a prophet indeed. 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.