Matthew 21:24-27 (New International Version)

 ²⁴Jesus replied, "I will also ask you one question. If you answer me, I will tell you by what authority I am doing these things. ²⁵John's baptism—where did it come from? Was it from heaven, or from men?"

   They discussed it among themselves and said, "If we say, 'From heaven,' he will ask, 'Then why didn't you believe him?' ²⁶But if we say, 'From men'—we are afraid of the people, for they all hold that John was a prophet."

 ²⁷So they answered Jesus, "We don't know."
      Then he said, "Neither will I tell you by what authority I am doing these things.