Apollo, an Olympian, was god of the Sun. He was also in charge of other matters, one of which was prophecy. That was one of his specialties. Now the Olympian gods could all see into the future a little, but Apollo was the only one who systematically offered this gift to humans. He established oracles, the most famous of which was
Delphi, where he sanctified the priestess. She was called the Pythia, after the Python that was one of her incarnations. Kings and Aristocrats, and occasionally ordinary people, would come to Delphi to beg to know what was to be.