A psychological study had three schizophrenics who each believed they were Jesus live together!

Known as “The Three Christs of Ypsilanti,” this book-length case study detailed the events that transpired as scientist Milton Rokeach placed three different extreme schizophrenics together and watched them interact at the Ypsilanti State Hospital in 1964. What he observed was interesting. 

Rokeach confronted each man about his claims and had them confront each other. Initially the three men argued, and even came to the point of physical altercation, but eventually all three reached the conclusion that the others were simply patients in a mental hospital and each continued to claim to be Jesus Christ. 

Rokeach hoped to lessen the degree of delusion that each person suffered from, and while he failed in his goal, the study is nonetheless fascinating. 

(Source)