Matthew 21:27

24 Jesus answered them, “I also will ask you one question, and if you tell me the answer, then I also will tell you by what authority I do these things. 25 The baptism of John, from where did it come? From heaven or from man?” And they discussed it among themselves, saying, “If we say, ‘From heaven,’ he will say to us, ‘Why then did you not believe him?’ 26 But if we say, ‘From man,’ we are afraid of the crowd, for they all hold that John was a prophet.” 27 So they answered Jesus, “We do not know.” And he said to them, “Neither will I tell you by what authority I do these things. 28 “What do you think? A man had two sons. And he went to the first and said, ‘Son, go and work in the vineyard today.’ 29 And he answered, ‘I will not,’ but afterward he changed his mind and went. 30 And he went to the other son and said the same. And he answered, ‘I go, sir,’ but did not go.