He also called Mr. Glass.
He is born with Type I osteogenesis imperfecta, a rare disease in which bones break easily. Drawing on what he has read in comic books during his many hospital stays, Price theorizes that if he is frail at one extreme, then perhaps there is someone strong at the opposite extreme.
David attends an exhibition at Elijah's comic book art gallery and meets Elijah's mother (Charlayne Woodard). After talking with Elijah in the back room of his studio, David shakes his hand and discovers to his horror that Elijah had orchestrated many of the fatal disasters he mentioned throughout the movie, causing hundreds of deaths, the last being David's train accident. Elijah insists the deaths were justified as a means to find David. He explains that his purpose in life is to be the archvillain to David's hero, even going so far as to suggest that his childhood moniker, "Mr. Glass," should have alerted him to the fact that he was always a villain. The final captions reveal that David led police to Elijah, who was committed to an institution for the criminally insane.