4 Bible Verses about Lunatics

Right there in front of everyone, he pretended to be insane. He acted confused and scratched up the doors of the town gate. He drooled in his beard. Look at him! Achish said to his officers. You can see he is crazy. Why did you bring him to me? I have enough crazy people without your bringing another one here. Keep him away from my palace!

While the word was in the king's mouth a voice came from heaven, saying: O king Nebuchadnezzar, to you it is spoken: The kingdom is departed from you. You will be driven from men. Your dwelling shall be with the beasts of the field. You will have to eat grass like bulls. Seven times shall pass over you until you know the Most High rules in the kingdom of men, and gives it to whomever he will. That same hour it was fulfilled upon Nebuchadnezzar. He was driven from men and did eat grass like bulls. His body was wet with the dew of heaven, till his hair grew like eagles' feathers, and his fingernails like birds' claws.read more.
At the end of the days I, Nebuchadnezzar, lifted up my eyes to heaven and my understanding returned to me. I blessed the Most High and I praised and honored the one who lives forever. His dominion is an everlasting dominion, and his kingdom from generation to generation. All the inhabitants of the earth are considered as nothing. He does according to his will in the army of heaven and among the inhabitants of earth. None can stop him, or say to him: 'What do you do?' My understanding returned to me at that time. The glory of my kingdom, my majesty and brightness returned to me. My counselors and my lords came to me. I was established in my kingdom with excellent greatness.

Many of them said: He has a demon and is mad. Why listen to him?

While he was defending himself, Festus said with a loud voice: Paul, you are beside yourself. Much learning has made you mad.