Mark 11:31 KJV

And they reasoned with themselves, saying, If we shall say, From heaven; he will say, Why then did ye not believe him?
Mark 11:31, King James Version

In context

30 The baptism of John, was it from heaven, or of men? answer me.

31 And they reasoned with themselves, saying, If we shall say, From heaven; he will say, Why then did ye not believe him?

32 But if we shall say, Of men; they feared the people: for all men counted John, that he was a prophet indeed.