'Madman' in the Bible

Then Achish said to his servants, "Look, you see a madman! Why did you bring him to me?

Do I lack madmen that you have brought this one to act like a madman before me? Should this one enter my household?"

Then Jehu came out to the officers of his master, and they said to him, "Peace? Why did this madman come to you?" And he said to them, "You know the man and his foolish talk."

The days of punishment have come; the days of retribution have come; Israel knows! The prophet [is] a fool, the man of the spirit [is] acting like a madman. Because of the greatness of your sin, [your] hostility [is] great.