Mark 11:29-33

29But Jesus answered and said to them, “I also will ask you one question; then 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.”

31And they reasoned among themselves, saying, “If we say, ‘From heaven,’ He will say, ‘Why then did you not believe him?’

32But if we say, ‘From men’ ”—they feared the people, for all counted John to have been a prophet indeed.

33So they answered and said to Jesus, “We do not know.” And Jesus answered and said to them, “Neither will I tell you by what authority I do these things.”