29 And Jesus said to them, I will ask you one question; and answer me, and I will tell you by what authority I do these things.
Mark 11:29 Cross References - Noyes
Matthew 21:24
24 And Jesus answering said to them, I also will ask you one question; which if ye answer me, I too will tell you by what authority I do these things.
Luke 20:3-8
3 And he answering said to them, I also will ask you a question; and tell me:
4 The baptism of John, was it from heaven, or from men?
5 And they reasoned among themselves, saying, If we say, From heaven, he will say, Why did ye not believe him?
6 But if we say, From men, all the people will stone us; for they are persuaded that John was a prophet.
7 And they answered, that they did not know whence it was.
8 And Jesus said to them, Neither do I tell you by what authority I do these things.