Mark 11:31

27They came again to Jerusalem, and as he was walking in the temple, the chief priests, the scribes, and the elders came to him,

28and they began saying to him, “By what authority do you do these things? Or who gave you this authority to do these things?”

29Jesus said to them, “I will ask you one question. Answer me, and I will tell you by what authority I do these things.

30The baptism of John—was it from heaven, or from men? Answer me.”

31They reasoned with themselves, saying, “If we should say, ‘From heaven;’ he will say, ‘Why then did you not believe him?’

32If we should say, ‘From men’”—they feared the people, for all held John to really be a prophet.

33They answered Jesus, “We don’t know.” Jesus said to them, “Neither will I tell you by what authority I do these things.”