Matthew 21:26

24And Jesus answered and said unto them, I also will ask you one thing, which if ye tell me, I in like wise will tell you by what authority I do these things.

25The baptism of John, whence was it? from heaven, or of men? And they reasoned with themselves, saying, If we shall say, From heaven; he will say unto us, Why did ye not then believe him?

26But if we shall say, Of men; we fear the people; for all hold John as a prophet.

27And they answered Jesus, and said, We cannot tell. And he said unto them, Neither tell I you by what authority I do these things.

28But what think ye? A certain man had two sons; and he came to the first, and said, Son, go work to day in my vineyard.