4 Bible Verses about Lunatics

So [fearing for his life] he changed his behavior in their sight, and acted insanely in their hands, and he scribbled on the doors of the gate, and drooled on his beard. Then Achish said to his servants, “Look, you see that the man is insane. Why have you brought him to me? Do I lack madmen, that you bring this one to behave like a madman in my presence? Shall this one come into my house?”

While the words were still in the king’s mouth, a voice came [as if falling] from heaven, saying, ‘O King Nebuchadnezzar, to you it is declared: “The kingdom has been removed from you, and you will be driven away from mankind, and your dwelling place will be with the animals of the field. You will be given grass to eat like the cattle, and seven periods of time will pass over you until you know [without any doubt] that the Most High God rules over the kingdom of mankind and He bestows it on whomever He desires.”’ Immediately the word concerning Nebuchadnezzar was fulfilled. He was driven away from mankind and began eating grass like cattle, and his body was wet with the dew of heaven until his hair had grown like eagles’ feathers and his nails were like birds’ claws. read more.
“But at the end of the days [that is, at the seven periods of time], I, Nebuchadnezzar, raised my eyes toward heaven, and my understanding and reason returned to me; and I blessed the Most High [God] and I praised and honored and glorified Him who lives forever,

For His dominion is an everlasting dominion;
And His kingdom endures from generation to generation.

“All the inhabitants of the earth are regarded as nothing.
But He does according to His will in the host of heaven
And among the inhabitants of the earth;
And no one can hold back His hand
Or say to Him, ‘What have You done?’ Now at the same time my reason returned to me; and for the glory of my kingdom, my majesty and splendor were returned to me, and my counselors and my nobles began seeking me out; so I was re-established in my kingdom, and still more greatness [than before] was added to me.

Many of them said, “He has a demon and He is mad [insane—He raves and rambles]. Why listen to Him?”

While Paul was making this defense, Festus said loudly, “Paul, you are out of your mind! Your great education is turning you toward madness.”