Acts 26:24-26

And as he thus made his defence, Festus saith with a loud voice, Paul, thou art mad; thy much learning is turning thee mad. But Paul saith, I am not mad, most excellent Festus; but speak forth words of truth and soberness. For the king knoweth of these things, unto whom also I speak freely: for I am persuaded that none of these things is hidden from him; for this hath not been done in a corner.