Dick and Ursula Le Guin both attended Berkeley High School and graduated in 1947. Although they didn’t know each other at the time, and I don’t believe they ever met face to face, they did correspond in the 70s.
Dick tells Le Guin that when he explained everything that has been happening to him to fellow sci-fi author Thomas Disch, Disch suggested Dick might have been possessed by Elijah. Dick is excited at the idea that it might very well have been the same spirit that filled Elijah, Elisha and reappeared as John the Baptist.