In Ancient Greece, the god Asklepios (Asclepius) was a powerful god related to medicine who, according to the Greek mythology, had the power to bring people back from dead – a power that many ancient gods from multiple mythologies had. He was one of the sons of the god Apollo.
We are all familiar with Asclepius in a way, since the symbol that is used for medicine, the snake entwined staff, was the rod of Asclepius – a tool that he used probably given to him by the gods. Asclepius was brought up by the mysterious figure of ancient Greek mythology, the centaur Chiron, who raised Asclepius and taught him about the art of medicine. Because Asclepius used his powers to bring people from Hades (meaning resurrecting them), the God of Hades complained to Zeus because Asclepius converted many people from humans to immortals. The result was for Zeus to kill Asclepius with thunder.
Source : ancient-origins.net