Matthew 21:24 in the King James Version
And 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.
Context
23 When he had come into the temple, the chief priests and the elders of the people came to him as he was teaching, and said, “By what authority do you do these things? Who gave you this authority?”
24 Jesus answered them, “I also will ask you one question, which if you tell me, I likewise will tell you by what authority I do these things.
25 The baptism of John, where was it from? From heaven or from men?” They reasoned with themselves, saying, “If we say, ‘From heaven,’ he will ask us, ‘Why then did you not believe him?’