John 18:19-21

19The high priest therefore demanded of Jesus concerning his disciples and concerning his doctrine.

20Jesus answered him, I spoke openly to the world; I taught always in [the] synagogue and in the temple, where all the Jews come together, and in secret I have spoken nothing.

21Why demandest thou of me? Demand of those who have heard, what I have spoken to them; behold, they know what I have said.