“For ten years he must serve without question,” the priestess continued. “Whatever he is told to do, Heracles must do. Whatever tasks he is set to perform, these must Heracles willingly undertake. Only then can he be free.” Hera’s spirit left the priestess and the voices of Apollo and Athena now enthused36 her. “Do all that you are asked without stint, without complaint, and immortality will be yours. Your father has promised it.”