Mark 11:28-33

28 And say to him, By what authority doest thou these things? and who gave thee this authority to do these things?

29 And Jesus answered and said to them, I will also ask of you one question, and 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 with themselves, saying, If we shall say, From heaven; he will say, Why then did ye not believe him?

32 But if we shall say, from men; they feared the people: for all [men] counted John that he was a prophet indeed.

33 And they answered and said to Jesus, We cannot tell. And Jesus answering saith to them, Neither do I tell you by what authority I do these things.