"Have faith Kratos, the Gods do not forget those who come to their aid." Athena
Athena is the Greek goddess of wisdom and the patron deity of Athens. Whilest Sophitia always prayed to her for protection, she knew that her brother Ares was doing evil behind Zeus' back. The goddess realized that Ares desired to become the ruler of Olympus and he needed Soul Edge in order to dethrone Zeus. So ironically, she took in one of his disciples: Kratos, the Ghost of Sparta who had pledged himself as a champion to her. So after a decade, She told Kratos to kill Ares because he was besieging Athens. So she guided the Spartan on his quest for vengeance and when Kratos defeated and destroyed Ares, it was Athena who made him the new God of War.