'Mad' in the Bible

You shall become mad {because of what your eyes shall see}.

So he changed his behavior {before them} and pretended to be mad {in their presence}. He made scratches on the doors of the gate and let his saliva run down into his beard.

"Yahweh made you priest instead of Jehoiada the priest, so that there are overseers [in] the house of Yahweh over any mad man [who] exhibits the behavior of a prophet, and you must put him into the stocks and into the neck iron,