Luke 20:6 YLT

⁴  the baptism of John, from heaven was it, or from men?'

⁵  And they reasoned with themselves, saying -- 'If we may say, From heaven, he will say, Wherefore, then, did ye not believe him?

⁶  and if we may say, From men, all the people will stone us, for they are having been persuaded John to be a prophet.'

⁷  And they answered, that they knew not whence 'it was',

⁸  and Jesus said to them, 'Neither do I say to you by what authority I do these things.'