Mark 11:30 WEB

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

²⁹  Jesus said to them, 'I will ask you one question. 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  They reasoned with themselves, saying, 'If we should say, 'From heaven;' he will say, 'Why then did you not believe him?'

³²  If we should say, 'From men''--they feared the people, for all held John to really be a prophet.