Acts 26:1-2, 24

And Agrippa said unto Paul, Thou art permitted to speak for thyself. Then Paul stretched forth his hand, and made his defence: I think myself happy, king Agrippa, that I am to make my defence before thee this day touching all the things whereof I am accused by the Jews

And as he thus made his defence, Festus saith with a loud voice, Paul, thou art mad; thy much learning is turning thee mad.