The true motive of Polydectes in sending Perseus to kill Medusa is not explicitly stated in Greek mythology, but there are several possible explanations. Some believe that Polydectes wanted revenge on Medusa for turning him into a monster. Others suggest that Polydectes was jealous of Perseus divine parentage and his potential to inherit great power, and wanted to get rid of him by sending him on a dangerous quest. Another possibility is that Polydectes was testing Perseus courage, strength, and intelligence. However, some sources suggest that Polydectes wanted Perseus to be killed by Medusa or turned into stone so that he could marry Perseus mother, Danae, without any interference. Whatever his true motive, Polydectes decision to send Perseus to kill Medusa was treacherous, as Medusa was one of the most dangerous creatures in Greek mythology.