To amplify on PvK's point, if you do Ritual of Rebirth on a dead Prophet in the Hall of Fame, he comes back with the same magic paths (H3, etc.) but not as a prophet. So you can re-Prophetize him to get him to H4. If he gets killed again and you bring him back again, he's now H5, etc. KO says it's thematic that Prophets who come back from the dead get stronger.
-Max